Update CI to checkout@v4, upload-artifact@v4, action-gh-release@v2 (#21)

.github/workflows/ci.yml

@@ -4,18 +4,18 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Download ffmpeg, zip
       run: sudo apt-get install -y ffmpeg zip
     - name: Create sound asset pack
       run: node build.mjs --verbose
     - name: Upload artifacts
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: "OpenRCT2 Sound FX Asset Pack"
         path: out/**/*
     - name: Create release
-      uses: softprops/action-gh-release@v1
+      uses: softprops/action-gh-release@v2
       if: startsWith(github.ref, 'refs/tags/v')
       with:
         fail_on_unmatched_files: true