chore: update sccache github action

Author: Frando

.github/workflows/rust.yml

@@ -118,7 +118,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: mozilla-actions/[email protected].4
+      - uses: mozilla-actions/[email protected].9
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}

quinn/src/tests.rs

@@ -317,8 +317,8 @@ impl EndpointFactory {
     fn client_config(&self) -> ClientConfig {
         let mut roots = rustls::RootCertStore::empty();
         roots.add(self.cert.cert.der().clone()).unwrap();
-        let client_config = ClientConfig::with_root_certificates(Arc::new(roots)).unwrap();
-        client_config
+        
+        ClientConfig::with_root_certificates(Arc::new(roots)).unwrap()
     }
 }