Bump actions/setup-python from 5.4.0 to 5.5.0

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 5.4.0 to 5.5.0.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v5.4.0...v5.5.0)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/unittests.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Setup Python
-        uses: actions/setup-python@v5.4.0
+        uses: actions/setup-python@v5.5.0
         with:
           python-version: '3.12'
 
@@ -50,7 +50,7 @@ jobs:
 
     steps:
       - name: Setup Python
-        uses: actions/setup-python@v5.4.0
+        uses: actions/setup-python@v5.5.0
         with:
           python-version: '3.12'