Skip 'Nancy' step in 'Security' workflow for external contributors.

Author: nickeskov

.github/workflows/security.yml

@@ -96,6 +96,7 @@ jobs:
       - name: Run go list
         run: go list -json -deps ./... > go.list
       - name: Nancy
+        if: (github.repository == 'wavesplatform/gowaves' && github.event.pull_request.head.repo.fork != true )
         uses: sonatype-nexus-community/nancy-github-action@726e338312e68ecdd4b4195765f174d3b3ce1533 # v1.0.3
         with:
           nancyVersion: latest