Add Clang 19 to Linux test matrix

.github/workflows/linux.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        compiler: [GCC-11, GCC-12, GCC-13, GCC-14, Clang-17, Clang-18]
+        compiler: [GCC-11, GCC-12, GCC-13, GCC-14, Clang-17, Clang-18, Clang-19]
         test_with: [Headers, Module]
         build_type: [Debug, Release]
 
@@ -56,6 +56,11 @@ jobs:
             install: |
               brew install llvm@18 ninja binutils
               brew link --force binutils
+          - compiler: Clang-19
+            cxx: $(brew --prefix llvm@19)/bin/clang++
+            install: |
+              brew install llvm@19 ninja binutils
+              brew link --force binutils
 
     steps:
     - uses: actions/checkout@master