ci: move Clang 14 build on GHA from Ubuntu 22.04 to Ubuntu 24.04

Author: striezel

.github/workflows/clang.yml

@@ -16,7 +16,7 @@ jobs:
           - version: 13
             os: ubuntu-22.04
           - version: 14
-            os: ubuntu-22.04
+            os: ubuntu-24.04
           - version: 16
             os: ubuntu-24.04
           - version: 18
@@ -50,9 +50,9 @@ jobs:
           cd build_static_std_libs
           cmake ../ -DENABLE_LTO=ON -DENABLE_STATIC_STANDARD_LIBRARIES=ON
           make -j2
-        if: matrix.version == 14 || matrix.version == 18
+        if: matrix.version == 12 || matrix.version == 18
       - name: Tests of build with statically linked standard libraries
         run: |
           cd "$GITHUB_WORKSPACE"/build_static_std_libs
           ctest -V
-        if: matrix.version == 14 || matrix.version == 18
+        if: matrix.version == 12 || matrix.version == 18