fix(package): update probot to version 7.1.0 (#12)

Author: greenkeeper[bot]

package.json

@@ -26,7 +26,7 @@
     "semantic-release": "semantic-release"
   },
   "dependencies": {
-    "probot": "7.0.0"
+    "probot": "7.1.0"
   },
   "devDependencies": {
     "codecov": "3.0.4",