Try to fix git author

Author: Peter-Sh

.github/actions/ensure-release-branch/ensure-release-branch.sh

@@ -114,7 +114,7 @@ if execute_command git ls-remote --heads origin "$RELEASE_VERSION_BRANCH" | grep
         # The reliable way to check the differences ignoring merges from version
         # branch into release branch is to perform a merge and check the result
         execute_command --no-std -- git switch -c tmp-rvb "origin/$RELEASE_VERSION_BRANCH"
-        execute_command --no-std -- git merge --no-commit --no-ff "origin/$RELEASE_BRANCH"
+        GIT_AUTHOR_NAME="TMP" execute_command --no-std -- git merge --no-commit --no-ff "origin/$RELEASE_BRANCH"
         execute_command --ignore-exit-code 1 --no-std -- git diff --quiet --cached "origin/$RELEASE_VERSION_BRANCH"
         diff_result=$last_cmd_result
         execute_command --ignore-errors --no-std -- git merge --abort