fix Nancy's branch name (#1394)

Author: Nivl

.github/workflows/pr-extra.yml

@@ -16,4 +16,4 @@ jobs:
       - name: Run go list
         run: go list -json -m all > go.list
       - name: Nancy
-        uses: sonatype-nexus-community/nancy-github-action@master
+        uses: sonatype-nexus-community/nancy-github-action@main