bower: bump requirements

bower.json

@@ -3,8 +3,8 b''
   "description": "User interface for elements for rhodecode",
   "main": "index.html",
   "dependencies": {
-    "webcomponentsjs": "^1.2.3",
-    "polymer": "Polymer/polymer#^2.6.0",
+    "webcomponentsjs": "^1.2.7",
+    "polymer": "Polymer/polymer#^2.6.1",
     "paper-button": "PolymerElements/paper-button#^2.1.2",
     "paper-spinner": "PolymerElements/paper-spinner#^2.1.0",
     "paper-tooltip": "PolymerElements/paper-tooltip#^2.1.1",