Bump the github-actions group with 3 updates

Bumps the github-actions group with 3 updates: [actions/upload-artifact](https://github.com/actions/upload-artifact), [actions/download-artifact](https://github.com/actions/download-artifact) and [sigstore/gh-action-sigstore-python](https://github.com/sigstore/gh-action-sigstore-python).


Updates `actions/upload-artifact` from 4 to 5
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

Updates `actions/download-artifact` from 5 to 6
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

Updates `sigstore/gh-action-sigstore-python` from 3.0.1 to 3.1.0
- [Release notes](https://github.com/sigstore/gh-action-sigstore-python/releases)
- [Changelog](https://github.com/sigstore/gh-action-sigstore-python/blob/main/CHANGELOG.md)
- [Commits](sigstore/gh-action-sigstore-python@v3.0.1...v3.1.0)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: sigstore/gh-action-sigstore-python
  dependency-version: 3.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/publish-to-pypi.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Build a binary wheel and a source tarball
       run: python3 -m build
     - name: Store the distribution packages
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v5
       with:
         name: python-package-distributions
         path: dist/
@@ -41,7 +41,7 @@ jobs:
 
     steps:
     - name: Download all the dists
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         name: python-package-distributions
         path: dist/
@@ -62,12 +62,12 @@ jobs:
 
     steps:
     - name: Download all the dists
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         name: python-package-distributions
         path: dist/
     - name: Sign the dists with Sigstore
-      uses: sigstore/gh-action-sigstore-python@v3.0.1
+      uses: sigstore/gh-action-sigstore-python@v3.1.0
       with:
         inputs: >-
           ./dist/*.tar.gz