Fix Nuget installation.

Author: SiegeLordEx

.github/workflows/continuous-integration.yml

@@ -9,8 +9,8 @@ jobs:
               uses: actions/checkout@v1
               with:
                   fetch-depth: 1
+            - uses: nuget/setup-nuget@v1
             - name: Setup
-              uses: nuget/setup-nuget@v1
               run: |
                   vcpkg install allegro5
                   mkdir deps