Bump actions/setup-python from 4.2.0 to 4.6.0

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 4.2.0 to 4.6.0.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v4.2.0...v4.6.0)

---
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>

.github/workflows/backend_tests.yml

@@ -87,7 +87,7 @@ jobs:
         uses: actions/checkout@v3.3.0
 
       - name: Set up Python ${{ matrix.python }}
-        uses: actions/setup-python@v4.2.0
+        uses: actions/setup-python@v4.6.0
         with:
           python-version: ${{ matrix.python }}
 
@@ -195,7 +195,7 @@ jobs:
       - name: Check out the repository
         uses: actions/checkout@v3.3.0
       - name: Set up Python
-        uses: actions/setup-python@v4.2.0
+        uses: actions/setup-python@v4.6.0
         with:
           python-version: "3.11"
       - name: Install Poetry
@@ -236,7 +236,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Python
-        uses: actions/setup-python@v4.2.0
+        uses: actions/setup-python@v4.6.0
         with:
           python-version: "3.11"