chore: import-certificate added as prerequisite for deploy (#1197)

Author: tiwarishubham635

.github/workflows/test-and-deploy.yml

@@ -61,12 +61,17 @@ jobs:
   deploy:
     name: Deploy
     if: success() && github.ref_type == 'tag'
-    needs: [ test ]
+    needs: [ test, import-certificate ]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sendgrid-csharp
         uses: actions/checkout@v2
 
+      - name: Download code signing certificate
+        uses: actions/download-artifact@v3
+        with:
+          name: certificate.pfx
+
       - name: Setup .NET Core SDK
         uses: actions/setup-dotnet@v1.8.2
         with: