fix(workflows): skip maintainer gate for maintainer-authored PRs (#17)

author_association only reports MEMBER for public org membership; with
private membership a maintainer's own PR could never clear the gate
(authors cannot approve their own PRs). Skip when the PR author is in
MAINTAINERS.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

Author: imran-siddique

.github/workflows/require-maintainer-approval.yml

@@ -27,6 +27,12 @@ jobs:
           script: |
             const MAINTAINERS = ['imran-siddique'];
 
+            const author = context.payload.pull_request.user.login;
+            if (MAINTAINERS.includes(author)) {
+              core.info(`Author ${author} is a maintainer, skipping gate`);
+              return;
+            }
+
             const association = context.payload.pull_request.author_association;
             if (association === 'MEMBER' || association === 'OWNER') {
               core.info(`Author is ${association}, skipping gate`);