chore: update lint packages

Signed-off-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -51,8 +51,8 @@
     "bluebird": "^3.5.4",
     "commitlint": "^13.1.0",
     "coveralls": "^3.0.4",
-    "eslint": "^6.6.0",
-    "eslint-config-loopback": "^13.0.0",
+    "eslint": "^6.8.0",
+    "eslint-config-loopback": "^13.1.0",
     "juggler-v3": "file:./deps/juggler-v3",
     "juggler-v4": "file:./deps/juggler-v4",
     "loopback-datasource-juggler": "^3.0.0 || ^4.0.0",