ci: explicitely call bench

For some reason, concurrency does not work, and it messes with perf's
profiling

Author: GuillaumeLagrange

.github/workflows/codspeed.yml

@@ -57,6 +57,8 @@ jobs:
           mode: walltime
           # Only tinybench supports walltime for now
           run: |
-            pnpm moon run --concurrency 1 :bench
+            pnpm moon run tinybench-plugin:bench
+            pnpm moon run vitest-plugin:bench
+            pnpm moon run benchmark.js-plugin:bench
             pnpm --workspace-concurrency 1 -r bench-tinybench
             pnpm --workspace-concurrency 1 -r bench-vitest