fix: bump microsoft/action-python from 0.7.2 to 0.7.3 (#59)

Bumps [microsoft/action-python](https://github.com/microsoft/action-python) from 0.7.2 to 0.7.3.
- [Release notes](https://github.com/microsoft/action-python/releases)
- [Commits](microsoft/action-python@0.7.2...0.7.3)

---
updated-dependencies:
- dependency-name: microsoft/action-python
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/CI.yml

@@ -10,6 +10,6 @@ on:
 
 jobs:
   validation:
-    uses: microsoft/action-python/.github/workflows/validation.yml@0.7.2
+    uses: microsoft/action-python/.github/workflows/validation.yml@0.7.3
     with:
       workdir: '.'