remove gcc8, add gcc12 to CI

Author: jacobwilliams

.github/workflows/CI.yml

@@ -10,7 +10,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        gcc_v: [8,9,10,11] # Version of GFortran we want to use.
+        gcc_v: [9,10,11,12] # Version of GFortran we want to use.
         python-version: [3.11]
     env:
       FC: gfortran-${{matrix.gcc_v}}
@@ -55,7 +55,7 @@ jobs:
         --slave /usr/bin/gcov gcov /usr/bin/gcov-${GCC_V}
 
     - name: Compile_with_build
-      if: matrix.gcc_v != 8 && matrix.gcc_v != 11
+      if: matrix.gcc_v != 12 && matrix.gcc_v != 11
       run: |
         GFORTRAN=gfortran-${{matrix.gcc_v}}
         GCOV=gcov-${{matrix.gcc_v}}
@@ -137,15 +137,15 @@ jobs:
     - name: Compile_with_build_mkdocs
       # build with build.sh, make documentation, run unit tests
       # and perform coverage analysis - used for doc deployment
-      if: matrix.gcc_v == 8
+      if: matrix.gcc_v == 12
       run: |
         GFORTRAN=gfortran-${{matrix.gcc_v}}
         GCOV=gcov-${{matrix.gcc_v}}
         ./build.sh --coverage --skip-documentation
         ./build.sh --coverage --enable-unicode
 
     - name: Deploy Documentation for master
-      if: matrix.gcc_v == 8 && github.ref == 'refs/heads/master'
+      if: matrix.gcc_v == 12 && github.ref == 'refs/heads/master'
       uses: JamesIves/[email protected]
       with:
         branch: gh-pages # The branch the action should deploy to.
@@ -157,15 +157,15 @@ jobs:
     - name: Rebuild documentation for tagged release
       env:
         TAGNAME: ${{github.ref_name}}
-      if: matrix.gcc_v == 8 && startsWith(github.ref, 'refs/tags/')
+      if: matrix.gcc_v == 12 && startsWith(github.ref, 'refs/tags/')
       run: |
         echo ${TAGNAME}
         rm -rf doc
         sed "2 s/^/version: ${TAGNAME}\n/" json-fortran.md > json-fortran.tagged.md
         ford --debug json-fortran.tagged.md
 
     - name: Deploy documentation for tagged release
-      if: matrix.gcc_v == 8 && startsWith(github.ref, 'refs/tags/')
+      if: matrix.gcc_v == 12 && startsWith(github.ref, 'refs/tags/')
       uses: JamesIves/[email protected]
       with:
         branch: gh-pages # The branch the action should deploy to.
@@ -174,7 +174,7 @@ jobs:
         single-commit: true
 
     - name: Upload coverage
-      if: matrix.gcc_v == 8
+      if: matrix.gcc_v == 12
       run: |
         rm json_*.F90-*unicode.gcov || true
         mv json_*.F90.gcov src/