Install dependencies in GitHub actions

.github/workflows/release.yml

@@ -13,6 +13,9 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+    
+    - name: Install dependencies
+      run: apt install cmake git gcc libsndfile-dev libpng-dev
 
     - name: Create Build Environment
       # Some projects don't allow in-source building, so create a separate build directory