back to ubuntu-22.04 (postgres 14.15) in test on latest

Author: sharkAndshark

.github/workflows/ci.yml

@@ -325,7 +325,10 @@ jobs:
             os: windows-latest
             ext: '.exe'
           - target: x86_64-unknown-linux-gnu
-            os: ubuntu-latest
+            os: ubuntu-22.04 
+            # that would be postgres 14.15 and potgis ?.?.? (with nyurik/action-setup-postgis@v2) See https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md#postgresql
+            # os: ubuntu-latest eg ubuntu-24.04 # that would be postgres 16.6 and postgis 3.5.1 (with nyurik/action-setup-postgis@v2) See https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md#postgresql
+
     steps:
       - name: Install and run Postgis
         uses: nyurik/action-setup-postgis@v2