build(deps): bump actions/setup-python from 4 to 5

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 4 to 5.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v4...v5)

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

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

.github/workflows/instance_test.yml

@@ -22,7 +22,7 @@ jobs:
         run: pipx install poetry
 
       - name: Set up Python ${{matrix.python-version}}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{matrix.python-version}}
           cache: 'poetry'

.github/workflows/mypy.yml

@@ -22,7 +22,7 @@ jobs:
       run: pipx install poetry
 
     - name: Set up Python ${{matrix.python-version}}
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{matrix.python-version}}
         cache: 'poetry'