chore(workflow): restore pull-requests permission in rust.yml

- Reintroduced the pull-requests permission to allow write access for better workflow management.

Author: kWAYTV

.github/workflows/rust.yml

@@ -6,6 +6,7 @@ on:
 
 permissions:
   contents: write
+  pull-requests: write
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}