Bump sigstore/gh-action-sigstore-python from 3.2.0 to v3 (#27)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Kyle King <KyleKing@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -134,7 +134,7 @@ jobs:
           name: python-package-distributions
           path: dist/
       - name: Sign the dists with Sigstore
-        uses: sigstore/gh-action-sigstore-python@v3.2.0
+        uses: sigstore/gh-action-sigstore-python@v3
         with:
           inputs: >-
             ./dist/*.tar.gz