Bump actions/setup-python from 5 to 6

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 5 to 6.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v5...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] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci-pact-master.yml

@@ -22,7 +22,7 @@ jobs:
       PACT_BROKER_PASSWORD: ${{ secrets.PACT_BROKER_PASSWORD }}
     steps:
       - name: setup python environment
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.11"
       - name: install uv

.github/workflows/ci-testing-deploy.yml

@@ -861,7 +861,7 @@ jobs:
           with:
             driver: docker-container
         - name: setup python environment
-          uses: actions/setup-python@v5
+          uses: actions/setup-python@v6
           with:
             python-version: ${{ matrix.python }}
         - name: install uv

.github/workflows/ci-testing-pull-request.yml

@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: setup python environment
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.11"
       - name: install uv
@@ -65,7 +65,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: setup python environment
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.11"
       - name: checkout
@@ -93,7 +93,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: setup python environment
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.11"
       - name: checkout