chore(github_hooks): update rexml dependency (#605)

## 📝 Description
resolves vunerability:
https://semaphore.semaphoreci.com/jobs/e0520eeb-a9ed-4f9d-ae6b-64545c017fe5#L266

## ✅ Checklist
- [ ] I have tested this change
- [ ] This change requires documentation update

Author: hamir-suspect

github_hooks/Gemfile.lock

@@ -312,7 +312,7 @@ GEM
     request_store (1.7.0)
       rack (>= 1.4)
     retryable (3.0.5)
-    rexml (3.4.1)
+    rexml (3.4.4)
     rspec (3.13.1)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)