[#6] Build project before running snyk.

.github/workflows/snyk.yml

@@ -7,12 +7,20 @@ on:
     branches: [ master ]
 
 jobs:
-  build:
+  security:
 
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 5.0.x
+      - name: Restore dependencies
+        run: dotnet restore
+      - name: Build
+        run: dotnet build --no-restore
       - name: Run Snyk to check for vulnerabilities
         uses: snyk/actions/dotnet@master
         env: