chore: adds skip-dirs to trivy image scan (#116)

Metadata pulled into the virtual environment for
dependencies contain false positives/examples. Skip Python metadata in directories
that are not maintained in this project.

Signed-off-by: Jennifer Power <barnabei.jennifer@gmail.com>

.github/workflows/publish.yml

@@ -84,6 +84,7 @@ jobs:
         with:
           image-ref: ${{ env.IMAGE_REGISTRY }}/${{ vars.QUAY_ORG }}/${{ env.IMAGE_NAME }}:${{ env.TAG }}
           exit-code: 1
+          skip-files:  "**/.venv/lib/**/METADATA"
           scanners: secret
           severity: HIGH,CRITICAL,MEDIUM