Fix dependabot issues

node_modules/date-time/package.json

@@ -1,6 +1,6 @@
 {
   "name": "date-time",
-  "version": "2.1.0",
+  "version": "3.1.0",
   "description": "Pretty datetime: `2014-01-09 06:46:01`",
   "license": "MIT",
   "repository": "sindresorhus/date-time",
@@ -10,13 +10,14 @@
     "url": "sindresorhus.com"
   },
   "engines": {
-    "node": ">=4"
+    "node": ">=6"
   },
   "scripts": {
-    "test": "xo && ava"
+    "test": "xo && ava && tsd"
   },
   "files": [
-    "index.js"
+    "index.js",
+    "index.d.ts"
   ],
   "keywords": [
     "datetime",
@@ -33,7 +34,8 @@
     "time-zone": "^1.0.0"
   },
   "devDependencies": {
-    "ava": "*",
-    "xo": "*"
+    "ava": "^1.4.1",
+    "tsd": "^0.7.1",
+    "xo": "^0.24.0"
   }
 }