Build: 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] <support@github.com>

Author: dependabot[bot]

.github/workflows/nightly-pypi-build.yml

@@ -35,7 +35,7 @@ jobs:
         with:
           fetch-depth: 1
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.12
 

.github/workflows/pypi-build-artifacts.yml

@@ -39,7 +39,7 @@ jobs:
         with:
           fetch-depth: 1
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: |
             3.9

.github/workflows/python-ci-docs.yml

@@ -38,7 +38,7 @@ jobs:
       - uses: actions/checkout@v5
       - name: Install poetry
         run: make install-poetry
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.12
       - name: Install

.github/workflows/python-ci.yml

@@ -53,7 +53,7 @@ jobs:
     - uses: actions/checkout@v5
     - name: Install poetry
       run: make install-poetry
-    - uses: actions/setup-python@v5
+    - uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python }}
     - name: Install system dependencies

.github/workflows/python-release-docs.yml

@@ -33,7 +33,7 @@ jobs:
       - uses: actions/checkout@v5
       - name: Install poetry
         run: make install-poetry
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python }}
       - name: Install docs

.github/workflows/python-release.yml

@@ -93,7 +93,7 @@ jobs:
         with:
           fetch-depth: 1
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.12
 

.github/workflows/svn-build-artifacts.yml

@@ -39,7 +39,7 @@ jobs:
         with:
           fetch-depth: 1
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: |
             3.9