Drop support for Node 10 and 13

Author: rwjblue

package.json

@@ -78,7 +78,7 @@
     "release-it-lerna-changelog": "^2.3.0"
   },
   "engines": {
-    "node": "10.* || >= 12"
+    "node": "12.* || >= 14"
   },
   "publishConfig": {
     "registry": "https://registry.npmjs.org"