Merge pull request #113 from ampproject/deps

Upgrade dependencies

Author: sebastianbenz

.github/workflows/CI.yml

@@ -10,7 +10,7 @@ jobs:
 
     strategy:
       matrix:
-        node: [10, 12]
+        node: [12, 14]
         os: [ubuntu-latest, macOS-latest, windows-latest]
 
     steps: