ci: use bigger runner for rules_rust execution (#484)

Signed-off-by: Matt Leon <mattleon@google.com>

Author: leonm1

.github/workflows/format.yml

@@ -83,7 +83,7 @@ jobs:
   rules_rust:
     name: check format with rules_rust
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04-16core
 
     steps:
     - uses: actions/checkout@v2