Update GHA linux workflow to use Ubuntu 22.04

Author: anjaldoshi

.github/workflows/linux.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04]
+        os: [ubuntu-22.04]
 
     steps:
     - uses: actions/checkout@v4