Install pugixml from apt since it's now a recent enough version.

.github/workflows/build.yml

@@ -17,9 +17,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Install Apt Dependencies
-      run: sudo apt update && sudo apt install ninja-build qt6-base-dev libboost-dev libboost-date-time-dev libboost-iostreams-dev nlohmann-json3-dev libasound2-dev librtmidi-dev libminizip-dev doctest-dev
-    - name: Install Other Dependencies
-      run: vcpkg install pugixml
+      run: sudo apt update && sudo apt install ninja-build qt6-base-dev libboost-dev libboost-date-time-dev libboost-iostreams-dev nlohmann-json3-dev libasound2-dev librtmidi-dev libpugixml-dev libminizip-dev doctest-dev
     - name: Create Build Directory
       run: cmake -E make_directory ${{runner.workspace}}/build
     - name: Generate Project