ci: restore comments

.github/workflows/rust-clippy.yml

@@ -1,9 +1,15 @@
+# rust-clippy is a tool that runs a bunch of lints to catch common
+# mistakes in your Rust code and help improve your Rust code.
+# More details at https://github.com/rust-lang/rust-clippy
+# and https://rust-lang.github.io/rust-clippy/
+
 name: rust-clippy analyze
 
 on:
   push:
     branches: [ "master" ]
   pull_request:
+    # The branches below must be a subset of the branches above
     branches: [ "master" ]
   schedule:
     - cron: '29 19 * * 2'
@@ -22,7 +28,7 @@ jobs:
     permissions:
       contents: read
       security-events: write
-      actions: read
+      actions: read # only required for a private repository by github/codeql-action/upload-sarif to get the Action run status
     steps:
       - name: Checkout code
         uses: actions/checkout@v4