chore(deps): update dependency eslint to v7

Author: renovate-bot

package.json

@@ -48,7 +48,7 @@
     "@semantic-release/changelog": "3.0.4",
     "@semantic-release/git": "7.0.16",
     "@wetransfer/eslint-config-wetransfer": "3.1.0",
-    "eslint": "6.6.0",
+    "eslint": "7.7.0",
     "husky": "3.1.0",
     "jest": "24.9.0",
     "jest-watch-typeahead": "0.4.0",