Upgrade release-it 8.3.0 -> 8.4.0

Author: ehmicky

package-lock.json

@@ -93,7 +93,7 @@
     "pkg-dir": "^3.0.0",
     "plugin-error": "^1.0.1",
     "prettier": "^1.15.3",
-    "release-it": "^8.3.0",
+    "release-it": "^8.4.0",
     "semver": "^5.6.0",
     "sinon": "^7.2.0",
     "source-map-support": "^0.5.9",