Bump sigstore/gh-action-sigstore-python from 3.3.0 to 3.4.0

Author: tpvasconcelos

.github/workflows/release.yml

@@ -124,7 +124,7 @@ jobs:
           name: python-package-distributions
           path: dist/
       - name: Sign the dists with Sigstore
-        uses: sigstore/gh-action-sigstore-python@v3.3.0
+        uses: sigstore/gh-action-sigstore-python@v3.4.0
         with:
           inputs: >-
             ./dist/*.tar.gz