chore: add native image checks as required (#1930)

Author: mpeddada1

.github/sync-repo-settings.yaml

@@ -20,6 +20,8 @@ branchProtectionRules:
       - compile (8)
       - compile (11)
       - OwlBot Post Processor
+      - 'Kokoro - Test: Java GraalVM Native Image'
+      - 'Kokoro - Test: Java 17 GraalVM Native Image'
   - pattern: 3.3.x
     isAdminEnforced: true
     requiredApprovingReviewCount: 1