fix(package): update @adobe/helix-simulator to version 2.12.13

Author: greenkeeper[bot]

package.json

@@ -37,7 +37,7 @@
     "@adobe/fastly-native-promises": "^1.3.2",
     "@adobe/helix-pipeline": "3.6.0",
     "@adobe/helix-shared": "1.4.0",
-    "@adobe/helix-simulator": "2.12.12",
+    "@adobe/helix-simulator": "2.12.13",
     "@adobe/htlengine": "3.2.0",
     "@babel/core": "^7.4.5",
     "@parcel/logger": "1.11.0",