Update Vulkan installation mechanism for Ubuntu

The GitHub runners are failing from the action being used due to some
implicit function call being expected. Ultimately this should be
unnecessary though, since there's no reason to be compiling Vulkan
since we can just download it.

This updates the logic to download it instead.

.github/actions/prepare-runner/action.yaml

@@ -71,27 +71,39 @@ runs:
       shell: bash
       if: runner.os == 'Linux'
       run: |
-        sudo apt-get update -y
         sudo apt-get install -y -qq                                            \
           libgtk-3-dev
 
     # Vulkan
 
-    - name: Install Vulkan SDK
-      uses: bitwizeshift/setup-vulkan-sdk@v2
-      if: runner.os == 'Linux' || runner.os == 'Windows'
-      with:
-        vulkan-query-version: 1.3.204.0
-        vulkan-components: Vulkan-Headers, Vulkan-Loader
-        vulkan-use-cache: true
-
     - name: Cache vulkan-sdk.dmg
       uses: actions/cache@v4
       if: runner.os == 'macOS'
       id: download-vulkan
       with:
         path: vulkan-sdk.dmg
-        key: vulkan-sdk
+        key: vulkan-sdk-${{ runner.os }}
+
+    - name: Create Temp Directory
+      shell: bash
+      id: dir
+      run: |
+        path="${{ runner.temp }}/vulkan-sdk"
+        mkdir -p "${path}"
+        echo path="${path}" >> "${GITHUB_OUTPUT}"
+
+    - name: Install Vulkan SDK
+      if: runner.os == 'Linux'
+      shell: bash
+      working-directory: "${{ steps.dir.outputs.path }}"
+      run: |
+        wget https://sdk.lunarg.com/sdk/download/latest/linux/vulkan-sdk.tar.xz
+        tar -xf vulkan-sdk.tar.xz
+        root=$(dirname "$(find . -type d -name "bin")")
+        echo VULKAN_SDK="${root}" >> "${GITHUB_ENV}"
+        echo LD_LIBRARY_PATH="${root}/lib:$LD_LIBRARY_PATH" >> "${GITHUB_ENV}"
+        echo VK_ADD_LAYER_PATH="${root}/share/vulkan/explicit_layer.d${VK_ADD_LAYER_PATH:+:$VK_ADD_LAYER_PATH}" >> "${GITHUB_ENV}"
+        echo "${root}/bin" >> "${GITHUB_PATH}"
 
     - name: Download vulkan-sdk.dmg
       shell: bash