Try to use a more recent version of cmake (#163)

* Try the latest version of CMake for Github actions: 3.24.0

* Try another version of CMake for Github actions: 3.18.0

* Try another version of CMake for Github actions: 3.19

* Try another version of CMake for Github actions: 3.19

* Revert "Try another version of CMake for Github actions: 3.19"

This reverts commit d505382.

* Revert "Try another version of CMake for Github actions: 3.19"

This reverts commit 4abd471.

* Added GCC 12 support in Gitlab Actions

* Don't try GCC 12 yet

Author: glynos

.github/workflows/skyr-url-ci.yml

@@ -4,7 +4,7 @@ name: skyr-url CI
 on: [ push, pull_request ]
 
 env:
-  CMAKE_VERSION: 3.17.3
+  CMAKE_VERSION: 3.18.6
   NINJA_VERSION: 1.11.0
 
 jobs:
@@ -61,6 +61,22 @@ jobs:
             cxx_standard: 20,
           }
 
+#          # GCC-12
+#          - {
+#            name: "Linux GCC 12 Debug (C++20)", artifact: "Linux.tar.xz",
+#            os: ubuntu-latest,
+#            build_type: Debug,
+#            cc: "gcc-12", cxx: "g++-12",
+#            cxx_standard: 20,
+#          }
+#          - {
+#            name: "Linux GCC 12 Release (C++20)", artifact: "Linux.tar.xz",
+#            os: ubuntu-latest,
+#            build_type: RelWithDebInfo,
+#            cc: "gcc-12", cxx: "g++-12",
+#            cxx_standard: 20,
+#          }
+
           # Clang-10
           - {
             name: "Linux Clang 10 Debug (C++20)", artifact: "Linux.tar.xz",
@@ -278,14 +294,14 @@ jobs:
           sudo apt-get update
           sudo apt-get -y install g++-11
 
-      - name: Install GCC 12
-        id: install_gcc_12
-        if: startsWith(matrix.config.os, 'ubuntu') && ( matrix.config.cxx == 'g++-12' )
-        shell: bash
-        working-directory: ${{ env.HOME }}
-        run: |
-          sudo apt-get update
-          sudo apt-get -y install g++-12
+#      - name: Install GCC 12
+#        id: install_gcc_12
+#        if: startsWith(matrix.config.os, 'ubuntu') && ( matrix.config.cxx == 'g++-12' )
+#        shell: bash
+#        working-directory: ${{ env.HOME }}
+#        run: |
+#          sudo apt-get update
+#          sudo apt-get -y install g++-12
 
       - name: Install Clang 8
         id: install_clang_8