Update rust-win.yml

.github/workflows/rust-win.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: Install dependencies
-      run: choco install openssl sqlite postgres mysql
+      run: choco install openssl sqlite postgresql12 mysql
 
     - name: Cache cargo registry
       uses: actions/cache@v1.0.3