Bump the github-actions group with 1 update (#204)

Bumps the github-actions group with 1 update: [ilammy/msvc-dev-cmd](https://github.com/ilammy/msvc-dev-cmd).

- [Release notes](https://github.com/ilammy/msvc-dev-cmd/releases)
- [Commits](ilammy/msvc-dev-cmd@v1.9.0...v1.12.1)

---
updated-dependencies:
- dependency-name: ilammy/msvc-dev-cmd
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/testing_projects.yaml

@@ -81,7 +81,7 @@ jobs:
  echo "C:\Program Files\OpenCppCoverage" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
 
  - name: Setup Windows Dev Env
- uses: ilammy/msvc-dev-cmd@v1.9.0
+ uses: ilammy/msvc-dev-cmd@v1.12.1
  with:
  arch: x64