fix(package): update @adobe/parcel-plugin-htl to version 2.1.6

Author: greenkeeper[bot]

package.json

@@ -37,7 +37,7 @@
     "@adobe/helix-pipeline": "^1.5.0",
     "@adobe/helix-shared": "1.2.0",
     "@adobe/helix-simulator": "2.12.6",
-    "@adobe/parcel-plugin-htl": "2.1.5",
+    "@adobe/parcel-plugin-htl": "2.1.6",
     "@babel/core": "^7.4.3",
     "@parcel/logger": "1.11.0",
     "@snyk/nodejs-runtime-agent": "1.43.0",