fix: remove beta runner

Author: not-matthias

.github/workflows/codspeed.yml

@@ -68,7 +68,6 @@ jobs:
           mode: ${{ matrix.mode }}
           run: uv run pytest tests/benchmarks/ --codspeed --test-group=${{ matrix.shard }} --test-group-count=${{ env.SHARDS }}
           token: ${{ secrets.CODSPEED_TOKEN }}
-          runner-version: v4.3.0-beta.0
 
   all-checks:
     runs-on: ubuntu-latest