Fix regression in release workflow (#990)

Signed-off by: Timofei Larkin <lllamnyp@gmail.com>

.github/workflows/pull-requests-release.yaml

@@ -110,7 +110,7 @@ jobs:
               await github.rest.git.updateRef({
                 owner: context.repo.owner,
                 repo:  context.repo.repo,
-                ref:   `heads/${branch}`,
+                ref:   `refs/heads/${branch}`,
                 sha:   commitSha,
                 force: true
               });