revert(ci): enable upload of helm signature file

This reverts commit 2cfe8ddb2c.

.gitea/workflows/release.yaml

@@ -117,15 +117,21 @@ jobs:
             --upload-file "${REPOSITORY_NAME}-${PACKAGE_VERSION}.tgz" \
               https://${GITEA_SERVER_HOSTNAME}/api/packages/${REPOSITORY_OWNER}/helm/api/charts
 
-          if [ -f "${REPOSITORY_NAME}-${PACKAGE_VERSION}.tgz.prov" ]; then
-            curl \
-              --fail \
-              --show-error \
-              --request POST \
-              --user "${REPOSITORY_OWNER}:${GITEA_REGISTRY_TOKEN}" \
-              --upload-file "${REPOSITORY_NAME}-${PACKAGE_VERSION}.tgz.prov" \
-                https://${GITEA_SERVER_HOSTNAME}/api/packages/${REPOSITORY_OWNER}/helm/api/prov
-          fi
+          # NOTE:
+          # Gitea does currently not support uploading Helm chart provenance files, so we skip this step for now. Once
+          # Gitea supports this, we can simply uncomment the following lines to upload the provenance file as well.
+          #
+          #   https://github.com/helm/helm/issues/31866
+          #
+          # if [ -f "${REPOSITORY_NAME}-${PACKAGE_VERSION}.tgz.prov" ]; then
+          #   curl \
+          #     --fail \
+          #     --show-error \
+          #     --request POST \
+          #     --user "${CHARTMUSEUM_USERNAME}:${CHARTMUSEUM_PASSWORD}" \
+          #     --upload-file "${REPOSITORY_NAME}-${PACKAGE_VERSION}.tgz.prov" \
+          #       https://${GITEA_SERVER_HOSTNAME}/api/packages/${REPOSITORY_OWNER}/helm/api/prov
+          # fi
 
       - name: Upload Chart to Chartmuseum (Helm)
         env: