switch back to 22.04 and install gcc13

.github/workflows/build.yml

@@ -16,7 +16,7 @@ env:
 jobs:
   linux:
     name: ${{ matrix.config.name }}, VulkanSDK ${{ matrix.vulkan-sdk }}, VMA=${{ matrix.vma }}
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix:
@@ -48,17 +48,17 @@ jobs:
         # We'll use this as our working directory for all subsequent commands
         run: |
           # Add lunarg apt sources
-          sudo sed -i -e 's|disco|noble|g' /etc/apt/sources.list
+          sudo sed -i -e 's|disco|jammy|g' /etc/apt/sources.list
           sudo apt update
           wget -qO - https://packages.lunarg.com/lunarg-signing-key-pub.asc | sudo apt-key add -
           if [ "${{ matrix.vulkan-sdk }}" = "latest" ]; then          
-            sudo wget -qO /etc/apt/sources.list.d/lunarg-vulkan-noble.list https://packages.lunarg.com/vulkan/lunarg-vulkan-noble.list
+            sudo wget -qO /etc/apt/sources.list.d/lunarg-vulkan-jammy.list https://packages.lunarg.com/vulkan/lunarg-vulkan-jammy.list
           else
-            sudo wget -qO /etc/apt/sources.list.d/lunarg-vulkan-${{ matrix.vulkan-sdk }}-noble.list https://packages.lunarg.com/vulkan/${{ matrix.vulkan-sdk }}/lunarg-vulkan-${{ matrix.vulkan-sdk }}-noble.list
+            sudo wget -qO /etc/apt/sources.list.d/lunarg-vulkan-${{ matrix.vulkan-sdk }}-jammy.list https://packages.lunarg.com/vulkan/${{ matrix.vulkan-sdk }}/lunarg-vulkan-${{ matrix.vulkan-sdk }}-jammy.list
           fi
 
           # For GCC-13
-          sudo add-apt-repository -y ppa:ubuntu-toolchain-r/ppa
+          sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
 
           # Update package lists
           sudo apt-get update -qq