CI: Switch mingw64 to Ubuntu 24.04 (#7682)

Switch mingw64 from Ubuntu 20.04 to Ubuntu 24.04

.github/workflows/build.yml

@@ -245,7 +245,6 @@ jobs:
   mingw:
     name: mingw64
     runs-on: ubuntu-latest
-    container: ghcr.io/lmms/linux.mingw:20.04
     env:
       CMAKE_OPTS: >-
         -Werror=dev
@@ -256,12 +255,12 @@ jobs:
       CCACHE_NOCOMPRESS: 1
       MAKEFLAGS: -j2
     steps:
-      - name: Enable POSIX MinGW
+      - name: Configure apt
         run: |
-          update-alternatives --set i686-w64-mingw32-gcc /usr/bin/i686-w64-mingw32-gcc-posix
-          update-alternatives --set i686-w64-mingw32-g++ /usr/bin/i686-w64-mingw32-g++-posix
-          update-alternatives --set x86_64-w64-mingw32-gcc /usr/bin/x86_64-w64-mingw32-gcc-posix
-          update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix
+          sudo sh -c 'echo "deb http://ppa.launchpad.net/tobydox/mingw-w64/ubuntu focal main" > \
+          /etc/apt/sources.list.d/tobydox-mingw-w64.list'
+          sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 72931B477E22FEFD47F8DECE02FE5F12ADDE29B2
+          sudo apt-get update -y
       - name: Configure git
         run: git config --global --add safe.directory "$GITHUB_WORKSPACE"
       - name: Check out
@@ -278,6 +277,10 @@ jobs:
             ccache-${{ github.job }}-64-${{ github.ref }}-
             ccache-${{ github.job }}-64-
           path: ~/.ccache
+      - name: Install dependencies
+        run: |
+          sudo apt-get install -y --no-install-recommends \
+          $(xargs < .github/workflows/deps-ubuntu-24.04-mingw.txt)
       - name: Configure
         run: |
           ccache --zero-stats

.github/workflows/deps-ubuntu-24.04-mingw.txt

@@ -0,0 +1,32 @@
+binutils-mingw-w64
+ccache
+cmake
+fftw-mingw-w64
+file
+flac-mingw-w64
+fltk-mingw-w64
+fluidsynth-mingw-w64
+g++-mingw-w64-i686
+g++-mingw-w64-x86-64
+gcc-mingw-w64
+gcc-mingw-w64-i686
+gcc-mingw-w64-x86-64
+git
+glib2-mingw-w64
+lame-mingw-w64
+libgig-mingw-w64
+liblist-moreutils-perl
+libsamplerate-mingw-w64
+libsndfile-mingw-w64
+libsoundio-mingw-w64
+libvorbis-mingw-w64
+libxml-parser-perl
+libz-mingw-w64-dev
+mingw-w64-tools
+nsis
+portaudio-mingw-w64
+qt5base-mingw-w64
+qt5svg-mingw-w64
+qttools5-dev-tools
+sdl2-mingw-w64
+stk-mingw-w64