chore: Update Signpath

The release version is now available for signpath, though there are
still a couple of steps to go through, this will ensure signing is
working correctly with the release action.

#1354

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
     outputs:
       artifact-url: ${{steps.sign.outputs.signing-request-id }}
     steps:
-      - uses: signpath/github-action-submit-signing-request@v0.4
+      - uses: signpath/github-action-submit-signing-request@v1
         id: sign
         with:
           api-token: ${{ secrets.SIGNPATH_API_TOKEN }}