Bump sigstore/gh-action-sigstore-python from 3.0.0 to 3.1.0

Bumps [sigstore/gh-action-sigstore-python](https://github.com/sigstore/gh-action-sigstore-python) from 3.0.0 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@f514d46...f832326)

---
updated-dependencies:
- dependency-name: sigstore/gh-action-sigstore-python
  dependency-version: 3.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/release_pypi.yml

@@ -86,7 +86,7 @@ jobs:
               sha1sum $file > $file.sha1
           done
       - name: Sign the dists with Sigstore
-        uses: sigstore/gh-action-sigstore-python@f514d46b907ebcd5bedc05145c03b69c1edd8b46 # v3.0.0
+        uses: sigstore/gh-action-sigstore-python@f832326173235dcb00dd5d92cd3f353de3188e6c # v3.1.0
         with:
           inputs: >-
             ./dist/*.tar.gz

.github/workflows/release_test_pypi.yml

@@ -88,7 +88,7 @@ jobs:
               sha1sum $file > $file.sha1
           done
       - name: Sign the dists with Sigstore
-        uses: sigstore/gh-action-sigstore-python@f514d46b907ebcd5bedc05145c03b69c1edd8b46 # v3.0.0
+        uses: sigstore/gh-action-sigstore-python@f832326173235dcb00dd5d92cd3f353de3188e6c # v3.1.0
         with:
           inputs: >-
             ./dist/*.tar.gz