Bump some devDependencies

package.json

@@ -61,7 +61,7 @@
     "url-parse-lax": "^1.0.0"
   },
   "devDependencies": {
-    "ava": "^0.18.0",
+    "ava": "^0.19.1",
     "coveralls": "^2.11.4",
     "form-data": "^2.1.1",
     "get-port": "^3.0.0",
@@ -69,7 +69,7 @@
     "nyc": "^10.0.0",
     "pem": "^1.4.4",
     "pify": "^2.3.0",
-    "tempfile": "^1.1.1",
+    "tempy": "^0.1.0",
     "xo": "^0.18.0"
   },
   "ava": {

test/unix-socket.js

@@ -1,10 +1,10 @@
 import {format} from 'util';
-import tempfile from 'tempfile';
+import tempy from 'tempy';
 import test from 'ava';
 import got from '../';
 import {createServer} from './helpers/server';
 
-const socketPath = tempfile('.socket');
+const socketPath = tempy.file({extension: 'socket'});
 
 let s;