chore(ci): add audit-ci config path for allowlist support

Add --config ./audit-ci.jsonc to audit-ci step so plugin repos can
provide their own allowlist for inherited @kinvolk/headlamp-plugin
dev-dependency CVEs (CTO decision PRI-854).

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.github/workflows/plugin-ci.yaml

@@ -173,7 +173,7 @@ jobs:
       - name: Security audit
         run: |
           if [ "${{ steps.pkg-manager.outputs.manager }}" = "pnpm" ]; then
-            npx audit-ci --pnpm --audit-level=high
+            npx audit-ci --pnpm --audit-level=high --config ./audit-ci.jsonc
           else
-            npx audit-ci --npm --audit-level=high
+            npx audit-ci --npm --audit-level=high --config ./audit-ci.jsonc
           fi