build!: update library to use Node 12 (#789)

* build!: Update library to use Node 12
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: sofisl

translate/package.json

@@ -8,7 +8,7 @@
     "!test/"
   ],
   "engines": {
-    "node": ">=10"
+    "node": ">=12.0.0"
   },
   "scripts": {
     "test": "mocha --recursive --timeout 240000"