build: Add continuous integration build property · Nodsoft/Nodsoft.Markdig.SyntaxHighlighting@fbf175b

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: ASzc/change-string-case-action@v4, Rebel028/[email protected]. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Build: Nodsoft.Markdig.SyntaxHighlighting.Tests/SyntaxHighlightingExtensionsTests.cs#L25

Cannot convert null literal to non-nullable reference type.

Build: Nodsoft.Markdig.SyntaxHighlighting.Tests/SyntaxHighlightingExtensionsTests.cs#L48

Cannot convert null literal to non-nullable reference type.

Build: Nodsoft.Markdig.SyntaxHighlighting.Tests/SyntaxHighlightingExtensionsTests.cs#L72

Cannot convert null literal to non-nullable reference type.

Build: Nodsoft.Markdig.SyntaxHighlighting.Tests/SyntaxHighlightingExtensionsTests.cs#L25

Cannot convert null literal to non-nullable reference type.

Build: Nodsoft.Markdig.SyntaxHighlighting.Tests/SyntaxHighlightingExtensionsTests.cs#L48

Cannot convert null literal to non-nullable reference type.

Build: Nodsoft.Markdig.SyntaxHighlighting.Tests/SyntaxHighlightingExtensionsTests.cs#L72

Cannot convert null literal to non-nullable reference type.

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