Switch CI from Ubuntu 20.04 to 22.04

This commit switches the Ubuntu CI job from running on Ubuntu 20.04 to
the newer 22.04 release.

Author: suve

.github/workflows/ci.yml

@@ -70,8 +70,8 @@ jobs:
       - name: Test 2 - Run Version Test
         run: |
           ./tests/testversion
-  ubuntu-20-04:
-    runs-on: ubuntu-20.04
+  ubuntu-22-04:
+    runs-on: ubuntu-22.04
     steps:
       - name: Install FPC
         run: |