fix(package): update @adobe/parcel-plugin-htl to version 2.1.10

BREAKING CHANGE: due to XSS fixes in the htlengine, injecting the DOM now needs `@ context='unsafe'`.
                 otherwise src and href attrbitues are removed.

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "@adobe/helix-pipeline": "^2.0.0",
     "@adobe/helix-shared": "1.3.1",
     "@adobe/helix-simulator": "2.12.9",
-    "@adobe/parcel-plugin-htl": "2.1.9",
+    "@adobe/parcel-plugin-htl": "2.1.10",
     "@babel/core": "^7.4.5",
     "@parcel/logger": "1.11.0",
     "@snyk/nodejs-runtime-agent": "1.45.0",