chore(deps): bump actions/setup-python from 3 to 6

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 3 to 6.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v3...v6)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/codecov.yml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v6
         with:
           python-version: "3.10"
       - name: Poetry

.github/workflows/formatter.yml

@@ -20,7 +20,7 @@ jobs:
           - name: Check out source repository
             uses: actions/checkout@v3
           - name: Set up Python environment
-            uses: actions/setup-python@v4
+            uses: actions/setup-python@v6
             with:
               python-version: "3.11"
           - name: autopep8

.github/workflows/gendocs.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v3
       - name: Set up Python
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v6
         with:
           python-version: '3.11'
       - name: Install dependencies

.github/workflows/tests.yml

@@ -16,7 +16,7 @@ jobs:
             - uses: actions/checkout@v4
 
             - name: Set up Python ${{ matrix.python-version }}
-              uses: actions/setup-python@v5
+              uses: actions/setup-python@v6
               with:
                   python-version: ${{ matrix.python-version }}