Update Promise PJs (#10762)

Fixes #10730.

A very interesting bug where promise adoption (an inner promise being
returned in side a `#then` block causes the outer to adopt the inner)
would not update the state of the outer promise if the inner was still
pending.

This only appeared when:

1. The outer promise was stored, and not used as a larger chain.
2. The inner promise was pending.
3. The outer promise has a `#then` block _after_ the inner promise
  resolved.

package.json

@@ -26,7 +26,7 @@
   },
   "dependencies": {
     "document-register-element": "1.5.0",
-    "promise-pjs": "1.1.2",
+    "promise-pjs": "1.1.3",
     "web-animations-js": "2.3.1"
   },
   "devDependencies": {