TASK: Update dependency eslint to v8

Author: renovate-bot

package.json

@@ -62,7 +62,7 @@
     "@babel/preset-flow": "7.14.5",
     "@immowelt/eslint-config-immowelt-base": "1.3.0",
     "@immowelt/jest-preset-node": "1.1.1",
-    "eslint": "6.8.0",
+    "eslint": "8.12.0",
     "eslint-plugin-compat": "3.9.0",
     "eslint-plugin-flowtype": "4.7.0",
     "eslint-plugin-import": "2.22.1",