fix(CI): use gfortran-14

Author: rouson

.github/workflows/build-with-gfortran.yml

@@ -26,4 +26,4 @@ jobs:
     - name: Build and Run unit tests
       run: |
         fpm test --compiler gfortran-14
-        (set +e ; stdout_stderr=$(fpm test --target false-assertion --compiler gfortran --flag -DRUN_FALSE_ASSERTIONS --profile release) ; echo "$stdout_stderr" | grep "expected 2; actual value is 1" &> /dev/null ; test $? = 0) 
+        (set +e ; stdout_stderr=$(fpm test --target false-assertion --compiler gfortran-14 --flag -DRUN_FALSE_ASSERTIONS --profile release) ; echo "$stdout_stderr" | grep "expected 2; actual value is 1" &> /dev/null ; test $? = 0)