CI: Install clang-tools-19 to ensure clang-scan-deps is available

Author: https://github.com/ayeteadoe
Commit: fc6237325b
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4667
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/alimpfard

.github/actions/setup/action.yml

@@ -40,7 +40,7 @@ runs:
             libstdc++-13-dev lld-19 nasm ninja-build qt6-base-dev qt6-tools-dev-tools tar unzip zip
 
         if ${{ inputs.toolchain == 'Clang' }} ; then
-          sudo apt-get install -y clang-19 clang++-19
+          sudo apt-get install -y clang-19 clang++-19 clang-tools-19
           sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-19 100
           sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-19 100
         fi