chore(deps): update commitlint monorepo to v8

Author: renovate-bot

package-lock.json

@@ -84,9 +84,9 @@
     "atom": ">=1.4.0 <2.0.0"
   },
   "devDependencies": {
-    "@commitlint/cli": "7.6.1",
-    "@commitlint/config-conventional": "7.6.0",
-    "@commitlint/travis-cli": "7.6.1",
+    "@commitlint/cli": "8.0.0",
+    "@commitlint/config-conventional": "8.0.0",
+    "@commitlint/travis-cli": "8.0.0",
     "@semantic-release/apm-config": "6.0.1",
     "husky": "2.3.0",
     "semantic-release": "15.13.12",