⬆️(dependency) upgrade eslint to v9

We upgraded ESLint to version 9 in the
eslint-config-impress package.
We rename it to eslint-plugin-docs.

renovate.json

@@ -27,7 +27,6 @@
         "@hocuspocus/provider",
         "@hocuspocus/server",
         "docx",
-        "eslint",
         "fetch-mock",
         "node",
         "node-fetch",