GHC 9.2.8 Upgrade for medea

[arjunkathuria]

This PR Upgrades and enables the repo to support an build with GHC 9.2.8 and it's related package set.

This is done as a part of the larger upgrade process, to which, this repo is a dependency.

Key changes include:-

1. Update the repo to be able to build with GHC 9.2.8.
2. Update the stack resolver to lts-20.26 (newest resolver with GHC 9.2.8)
3. Handle breaking changes arising from the upgrade.
4. Fix the broken test-suite after upgrade.
5. Update the cabal file:
   • Remove version bounds from dependency packages.
6. Adds a new cabal.project file.
7. Cleanup and other housekeeping
   • remove now redundant import statements and code.
   • update the package version to 1.3.0 in cabal file.
   • update the CHANGELOG.md file with the relevant entry.

[arjunkathuria]

Inquired with Ankur (Euler PM) whom to add as a reviewer for this PR and he mentioned that Aravind is the authority on projects under Juspay github org.

Adding @aravindgopall as a reviewer to request a review and a merge ( i don't seem to have permissions to add to the reviewers section, so tagging in comments )

[arjunkathuria]

gentle reminder for a review.

cc: @aravindgopall @eswar2001

[arjunkathuria]

Update: please confirm with me first once before merging it in, it seems it may not be required now to update this.

[srid]

I believe this can be closed since #19 got merged?