fix(docker): do not fail docker image cleanup

[MikeDombo]

Issue #, if available:

Description of changes:
Docker image cleanup will fail if the image doesn't exist. Catch the exception, log it and then keep going. This should not cause any tests to fail.

Why is this change necessary:

How was this change tested:

Any additional information or context required to review the change:

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[github-actions]

Unit Tests Coverage Report for aws-greengrass-testing-features

File	Coverage	Lines	Branches
All files	32%	39%	25%	❌
com.aws.greengrass.testing.model.TestContextModel	0%	0%	0%	❌
com.aws.greengrass.testing.model.RegistrationContextModel	0%	0%	0%	❌
com.aws.greengrass.testing.model.ScenarioContext	64%	70%	57%	✅
com.aws.greengrass.testing.model.GreengrassContextModel	25%	25%	0%	❌
com.aws.greengrass.testing.component.RecipeComponentPreparationService$1	100%	100%	0%	✅
com.aws.greengrass.testing.component.LocalComponentPreparationService$1	100%	100%	0%	✅
com.aws.greengrass.testing.component.ClasspathComponentPreparationService	100%	100%	0%	✅
com.aws.greengrass.testing.component.CloudComponentPreparationService	32%	39%	25%	❌
com.aws.greengrass.testing.component.FileComponentPreparationService	100%	100%	0%	✅
com.aws.greengrass.testing.component.CompositeComponentPreparationService	100%	100%	0%	✅
com.aws.greengrass.testing.component.PreparationServiceUtils	10%	10%	0%	❌
com.aws.greengrass.testing.component.LocalComponentPreparationService	59%	56%	63%	❌
com.aws.greengrass.testing.component.RecipeComponentPreparationService	48%	53%	44%	❌
com.aws.greengrass.testing.util.EncryptionUtils	0%	0%	0%	❌
com.aws.greengrass.testing.util.EncryptionUtils$PemWriter	0%	0%	0%	❌
com.aws.greengrass.testing.features.DeploymentSteps	27%	39%	14%	❌
com.aws.greengrass.testing.features.GreengrassSteps	100%	100%	0%	✅
com.aws.greengrass.testing.features.FileSteps$ByteNotation	0%	0%	0%	❌
com.aws.greengrass.testing.features.FileSteps	11%	11%	0%	❌
com.aws.greengrass.testing.features.WaitSteps	55%	73%	38%	❌
com.aws.greengrass.testing.features.IamSteps	0%	0%	0%	❌
com.aws.greengrass.testing.features.IotSteps	44%	44%	0%	❌
com.aws.greengrass.testing.features.AWSResourcesSteps	0%	0%	0%	❌
com.aws.greengrass.testing.features.DeploymentSteps$2	0%	0%	0%	❌
com.aws.greengrass.testing.features.DeploymentSteps$1	100%	100%	0%	✅
com.aws.greengrass.testing.features.DeploymentSteps$3	100%	100%	0%	✅
com.aws.greengrass.testing.features.NetworkUtilsSteps	0%	0%	0%	❌
com.aws.greengrass.testing.features.S3Steps	72%	94%	50%	✅
com.aws.greengrass.testing.features.RegistrationSteps	34%	40%	28%	❌
com.aws.greengrass.testing.features.GreengrassCliSteps	60%	69%	50%	✅
com.aws.greengrass.testing.features.LoggerSteps	0%	0%	0%	❌
com.aws.greengrass.testing.DefaultGreengrass	54%	69%	38%	❌
com.aws.greengrass.testing.modules.HsmParameters	0%	0%	0%	❌
com.aws.greengrass.testing.modules.FeatureParameters	0%	0%	0%	❌

Minimum allowed coverage is 60%

Generated by 🐒 cobertura-action against 082174c

[github-actions]

Unit Tests Coverage Report for aws-greengrass-testing-launcher

File	Coverage	Lines	Branches
All files	65%	76%	53%	✅
com.aws.greengrass.testing.launcher.reporting.StepTrackingReporting	49%	62%	36%	❌
com.aws.greengrass.testing.launcher.utils.CucumberReportUtils	95%	100%	90%	✅
com.aws.greengrass.testing.launcher.ParallelizationConfig	100%	100%	0%	✅
com.aws.greengrass.testing.launcher.TestLauncherParameterValues	0%	0%	0%	❌
com.aws.greengrass.testing.launcher.TestLauncherParameters	100%	100%	0%	✅

Minimum allowed coverage is 60%

Generated by 🐒 cobertura-action against 082174c

[github-actions]

Unit Tests Coverage Report for aws-greengrass-testing-platform-api

File	Coverage	Lines	Branches
All files	45%	34%	56%	❌
com.aws.greengrass.testing.platform.windows.WindowsNetworkUtils	0%	0%	0%	❌
com.aws.greengrass.testing.platform.windows.WindowsPlatform	75%	75%	0%	✅
com.aws.greengrass.testing.platform.windows.WindowsNetworkUtils$1	0%	0%	0%	❌
com.aws.greengrass.testing.platform.windows.WindowsCommands	43%	36%	50%	❌
com.aws.greengrass.testing.platform.macos.MacosNetworkUtils	0%	0%	0%	❌
com.aws.greengrass.testing.platform.macos.MacosCommands	96%	100%	92%	✅
com.aws.greengrass.testing.platform.macos.MacosPlatform	75%	75%	0%	✅
com.aws.greengrass.testing.platform.linux.LinuxNetworkUtils	0%	0%	0%	❌
com.aws.greengrass.testing.platform.linux.LinuxCommands	100%	100%	0%	✅
com.aws.greengrass.testing.platform.linux.LinuxPlatform	75%	75%	0%	✅
com.aws.greengrass.testing.platform.AbstractPlatform	100%	100%	0%	✅
com.aws.greengrass.testing.platform.PlatformResolver	96%	100%	92%	✅
com.aws.greengrass.testing.platform.RemoteFiles	15%	15%	0%	❌
com.aws.greengrass.testing.platform.LocalFiles	61%	71%	50%	✅
com.aws.greengrass.testing.platform.NetworkUtils	0%	0%	0%	❌
com.aws.greengrass.testing.platform.UnixPathsMixin	0%	0%	0%	❌
com.aws.greengrass.testing.platform.UnixCommands	7%	7%	0%	❌
com.aws.greengrass.testing.platform.DevicePredicatePlatformFiles	28%	28%	0%	❌
com.aws.greengrass.testing.platform.NucleusInstallationParametersModel	0%	0%	0%	❌
com.aws.greengrass.testing.platform.Commands	0%	0%	0%	❌
com.aws.greengrass.testing.platform.PlatformFiles	0%	0%	0%	❌

Minimum allowed coverage is 60%

Generated by 🐒 cobertura-action against 082174c

[github-actions]

Unit Tests Coverage Report for aws-greengrass-testing-platform-pillbox

File	Coverage	Lines	Branches
All files	66%	67%	65%	✅
com.aws.greengrass.testing.pillbox.commands.files.Exists	100%	100%	100%	✅
com.aws.greengrass.testing.pillbox.commands.files.Mkdir	87%	90%	83%	✅
com.aws.greengrass.testing.pillbox.commands.files.Find	82%	100%	64%	✅
com.aws.greengrass.testing.pillbox.commands.files.Cat	100%	100%	100%	✅
com.aws.greengrass.testing.pillbox.commands.files.Remove	88%	93%	83%	✅
com.aws.greengrass.testing.pillbox.commands.files.Find$Type	89%	93%	86%	✅
com.aws.greengrass.testing.pillbox.Pillbox	0%	0%	0%	❌
com.aws.greengrass.testing.pillbox.commands.Process	0%	0%	0%	❌
com.aws.greengrass.testing.pillbox.commands.Files	0%	0%	0%	❌
com.aws.greengrass.testing.pillbox.commands.process.Descendants	0%	0%	0%	❌

Minimum allowed coverage is 60%

Generated by 🐒 cobertura-action against 082174c