Update sigstore version for releasing to pypi (#66)

Author: solbrigm

.github/workflows/release.yml

@@ -64,7 +64,7 @@ jobs:
         path: ./dist
 
     - name: Sign the dists with Sigstore
-      uses: sigstore/gh-action-sigstore-python@v1.2.3
+      uses: sigstore/gh-action-sigstore-python@v3.0.0
       with:
         inputs: >-
           ./dist/*.tar.gz