Also work from refs/tags/* (#9875)

Author: jonsimantov

.github/workflows/update-cpp-sdk-on-release.yml

@@ -42,8 +42,8 @@ jobs:
       - name: Ensure Cocoapods repo has been updated
         run: |
           # If the new version is simply vX.Y.Z or X.Y.Z, wait up to an hour each for its podspec and prebuilt zip file to be present.
-          if [[ "$GITHUB_REF" =~ ^v?[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
-            version=$(echo "$GITHUB_REF" | sed s/^v//)  # remove leading v if present
+          if [[ "$GITHUB_REF" =~ ^(refs/tags/)?v?[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            version=$(echo "$GITHUB_REF" | sed 's|^refs/tags/||' | sed s/^v//)  # remove leading refs/tags and v if present
             echo "Checking Cocoapods repo for associated Firebase ${version} podspec."
             podspec_url="https://github.com/CocoaPods/Specs/blob/master/Specs/0/3/5/Firebase/${version}/Firebase.podspec.json"
             for retry in {1..12} error; do