ci/benches: increase timeout and use bigger machine

Author: tzemanovic

.github/workflows/ci.yml

@@ -362,11 +362,11 @@ jobs:
         run: sccache --stop-server || true
 
   check-benchmarks:
-    runs-on: [self-hosted, 8vcpu-16ram-ubuntu22-namada-x86]
+    runs-on: [self-hosted, 16vcpu-32ram-ubuntu22-namada-x86]
     container:
       image: ghcr.io/heliaxdev/namada-ci:namada-main
     if: github.event.pull_request.draft == false || contains(github.head_ref, 'mergify/merge-queue') || contains(github.ref_name, 'mergify/merge-queue')
-    timeout-minutes: 25
+    timeout-minutes: 35
     needs: [build-wasm]
 
     steps: