chore: bump node requirement (>=10) (#92)

diff --git a/package.json b/package.json
index 209b722..71b60a3 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
   ],
   "license": "Apache-2.0",
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=10.0.0"
   },
   "nyc": {
     "include": [