chore(workflow): remove pull-requests permission from rust.yml

- Eliminated the pull-requests permission to streamline workflow permissions and enhance security.

Author: kWAYTV

.github/workflows/rust.yml

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