add permissions to GITHUB_TOKEN to read gists

Author: cedi

.github/workflows/rust.yml

@@ -37,6 +37,10 @@ jobs:
     name: Test
     runs-on: ubuntu-latest
 
+    permissions:
+      contents: read
+      gists: read
+
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable