Disable renovate updates for ES, PG and Redis docker images

[krysal]

Description

We perform these updates manually while Renovate keeps reporting them (see all the related docker updates in #255), creating noise.

Testing Instructions

N/A.

Checklist

• My pull request has a descriptive title (not a vague title likeUpdate index.md).
• My pull request targets the default branch of the repository (main) or a parent feature branch.
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible errors.
• I ran the DAG documentation generator (ov just catalog/generate-docs for catalog
  PRs) or the media properties generator (ov just catalog/generate-docs media-props
  for the catalog or ov just api/generate-docs for the API) where applicable.

Developer Certificate of Origin

Developer Certificate of Origin

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[dhruvkb]

That is a good call, thanks! It was frustrating to decline those PRs because we want to use the versions of these services that match production.