test with newest PETSc on GitHub actions

Author: MarDiehl

.github/workflows/Fortran.yml

@@ -2,7 +2,7 @@ name: Grid and Mesh Solver
 on: [push]
 
 env:
-  PETSC_VERSION: '3.21.4'
+  PETSC_VERSION: '3.22.0'
   HOMEBREW_NO_ANALYTICS: 'ON'     # Make Homebrew installation a little quicker
   HOMEBREW_NO_AUTO_UPDATE: 'ON'
   HOMEBREW_NO_BOTTLE_SOURCE_FALLBACK: 'ON'