Update dependency probot to v7

renovate[bot] · fusion-bot[bot] · commit a2e58c0a7bda · 2018-08-23T23:41:27.000Z
#60
diff --git a/package.json b/package.json
@@ -13,7 +13,7 @@
     "fix": "eslint . --fix"
   },
   "dependencies": {
-    "probot": "6.2.0"
+    "probot": "7.0.1"
   },
   "devDependencies": {
     "eslint": "5.3.0",
