DEVPROD-19870: Cut instance sizes to half where possible

[anjani-bhat]

Summary

Ticket: DEVPROD-19870
This PR is for cutting instance sizes in half for variants that are underutilizing resources. This should result in an ~ 34k savings in a year.

Proof of Work

The tests are passing here for the variants whose instance types were changed from ubuntu2204-large to ubuntu2204-medium. The failing tasks are failing in the base commit as well, so i'm not really sure if it is related.

Variants downsized + the passing tests:

• e2e_mdb_kind_ubi_cloudqa

• e2e_static_mdb_kind_ubi_cloudqa

• e2e_static_om70_kind_ubi

• e2e_static_om80_kind_ubi

The tasks are 5% slower compared to the base commit which has a total time taken of 7d 14h 52m 49s. Whereas this patch took 8d 0h 59m 48s. However there are some failing and undispatched tasks in the base commit. Comparing to the patch in a recent PR that has all tasks passing, it is only 0.7% slower (the patch took 7d 23h 35m 46s)

Checklist

• Have you linked a jira ticket and/or is the ticket in the title?
• Have you checked whether your jira ticket required DOCSP changes?
• Have you added changelog file?
  • use skip-changelog label if not needed
  • refer to Changelog files and Release Notes section in CONTRIBUTING.md for more details
    (I'm unable to add a skip-changelog label since i don't have write access. Would the reviewer be able to add it?)