fix: Handle remote prune failures gracefully (#4295)

Wrap the git remote prune command in a try-catch block to prevent
the action from failing if the prune operation fails. Instead, log
a warning message and allow the action to continue.

Fixes edge cases where the prune command may fail on self-hosted
runners but shouldn't block the pull request creation workflow.

dist/index.js

@@ -458,7 +458,12 @@ function createPullRequest(inputs) {
                 // deleted after being merged or closed. Without this the push using
                 // '--force-with-lease' fails due to "stale info."
                 // https://github.com/peter-evans/create-pull-request/issues/633
-                yield git.exec(['remote', 'prune', branchRemoteName]);
+                try {
+                    yield git.exec(['remote', 'prune', branchRemoteName]);
+                }
+                catch (error) {
+                    core.warning(`Failed to prune remote '${branchRemoteName}': ${error.message}`);
+                }
             }
             core.endGroup();
             // Apply the branch suffix if set