Added downloading go deps for the release process (#448)

Author: igor-karpukhin

.github/workflows/release-branch.yml

@@ -31,6 +31,10 @@ jobs:
       with:
         go-version: "1.17"
 
+    - name: Download dependencies
+      run: |
+        go mod download
+
     - name: Create the licence report file
       run: |
         go get github.com/google/go-licenses && go-licenses csv cmd/manager/main.go --stderrthreshold 3 > third_party_licenses.txt