build(npm): require Node 10.18.0 or newer

Author: KaiSchwarz-cnic

package.json

@@ -9,7 +9,7 @@
   },
   "license": "MIT",
   "engines": {
-    "node": ">=8.3.0"
+    "node": ">=10.18.0"
   },
   "homepage": "https://github.com/hexonet/python-sdk",
   "repository": "https://github.com/hexonet/python-sdk.git",
@@ -47,4 +47,4 @@
     "@semantic-release/git": "^7.0.16",
     "semantic-release": "^15.13.12"
   }
-}
+}