Update dependency eslint to v7.15.0 (#849)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package-lock.json

@@ -37,7 +37,7 @@
         "@typescript-eslint/eslint-plugin": "4.9.0",
         "@typescript-eslint/parser": "4.9.0",
         "babel-jest": "26.6.3",
-        "eslint": "7.14.0",
+        "eslint": "7.15.0",
         "husky": "4.3.0",
         "jest": "26.6.3",
         "lint-staged": "10.5.3",