Try switching to 22.04

Author: peternewman

.github/workflows/codespell-private.yml

@@ -11,7 +11,7 @@ jobs:
     env:
       REQUIRE_ASPELL: true
     # Make sure we're using the latest aspell dictionary
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix: