update CI to cmake 3.28.x

Author: jacobwilliams

.github/workflows/CI.yml

@@ -32,7 +32,7 @@ jobs:
       if: contains( matrix.gcc_v, 9 )
       uses: jwlawson/[email protected]
       with:
-        cmake-version: '3.19.x'
+        cmake-version: '3.28.x'
 
     - name: Install Python
       uses: actions/[email protected] # Use pip to install latest CMake, & FORD/Jin2For, etc.