Update dependencies.

Author: Steven Orvell

package-lock.json

@@ -24,7 +24,7 @@
     "@types/chai": "^4.0.1",
     "@types/mocha": "^5.2.4",
     "@webcomponents/shadycss": "^1.5.2",
-    "@webcomponents/webcomponentsjs": "^2.1.2",
+    "@webcomponents/webcomponentsjs": "^2.1.3",
     "chai": "^4.0.2",
     "mocha": "^5.0.5",
     "rollup": "^0.64.1",
@@ -40,7 +40,7 @@
   },
   "typings": "lit-element.d.ts",
   "dependencies": {
-    "lit-html": "^0.11.3"
+    "lit-html": "^0.11.4"
   },
   "publishConfig": {
     "access": "public"