Bump actions/setup-python from 5 to 6 (#883)

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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/create-release-tag.yml

@@ -15,7 +15,7 @@ jobs:
           fetch-depth: 0  # This causes all history to be fetched, which is required for calculate-version to function	
 
       - name: Install Python 3.9
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: 3.9
 

.github/workflows/deploy-backend.yml

@@ -132,7 +132,7 @@ jobs:
         if: ${{ inputs.environment == 'dev' && inputs.create_mns_subscription }}
         run: pip install poetry==2.1.4
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         if: ${{ inputs.environment == 'dev' && inputs.create_mns_subscription }}
         with:
           python-version: 3.11

.github/workflows/pr-teardown.yml

@@ -52,7 +52,7 @@ jobs:
       - name: Install poetry
         run: pip install poetry==2.1.4
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.11
           cache: 'poetry'

.github/workflows/quality-checks.yml

@@ -24,7 +24,7 @@ jobs:
 
       # Base linting requires 3.8 due to APIM package dependencies. See root README for details under linting.
       # Consider upgrading this and poetry deps if we move away from Azure DevOps to using the Proxygen tool.
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.8
           cache: 'poetry'
@@ -50,7 +50,7 @@ jobs:
       - name: Install poetry
         run: pip install poetry==2.1.4
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.11
           cache: 'poetry'