change(checkpoints): update mainnet and testnet checkpoints

[teor2345]

Motivation

Updating the checkpoints will speed up Zebra for users and in CI.

Review

This is a routine change, anyone can review it.

Reviewer Checklist

• Existing tests pass

[codecov]

Codecov Report

Merging #4708 (b19b8f7) into main (54efbe9) will decrease coverage by 0.08%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #4708      +/-   ##
==========================================
- Coverage   78.89%   78.80%   -0.09%     
==========================================
  Files         306      306              
  Lines       37498    37498              
==========================================
- Hits        29584    29552      -32     
- Misses       7914     7946      +32     

[oxarbitrage]

Always good to do this. should we do this with every release ?

[teor2345]

Always good to do this. should we do this with every release ?

It doesn't really change performance that much, so every few months should be fine.
But if the large Orchard blocks continue, we might want to do it more often.