Update main.yml

.github/workflows/main.yml

@@ -48,7 +48,7 @@ jobs:
     - name: Benchmark
       run: python scripts/run_tests.py benchmark
   build_linux:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v4
       with: