change(checkpoints): Update block hash checkpoints for mainnet

[oxarbitrage]

Motivation

Part of the quick fixes of CI timeouts #4910

This PR updates mainnet checkpoints, will do the testnet ones but i have to sync zcashd testnet from scratch first.I will submit them in a separated PR as mainnet is the most important.

Solution

Update mainnet checkpoints

Review

Anyone can review, i think this should be merged if it pass the CI or if it don't.

Follow Up Work

Update testnet checkpoints.

[codecov]

Codecov Report

Merging #4919 (795ae91) into main (360631f) will decrease coverage by 0.14%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #4919      +/-   ##
==========================================
- Coverage   78.86%   78.72%   -0.15%     
==========================================
  Files         309      309              
  Lines       38781    38781              
==========================================
- Hits        30586    30530      -56     
- Misses       8195     8251      +56     

[teor2345]

I'm still seeing a timeout in the Zebra update to tip test, even with the updated checkpoints:

2022-08-18T23:00:06.180256Z INFO {net="Main"}: zebrad::components::sync::progress: estimated progress to chain tip sync_percent=99.754% current_height=Height(1773526) network_upgrade=Nu5 remaining_sync_blocks=4378 time_since_last_state_block=0s
Error:
0: stdout of command did not contain any matches for the given regex
Location:
/opt/zebrad/zebra-test/src/command.rs:779
Command:
"/opt/zebrad/target/release/zebrad" "-c" "/tmp/zebrad_testsBaar2c/zebrad.toml" "start"

Match Regex:
[
"finished initial sync to chain tip, using gossiped blocks .sync_percent.=.*100\.",
]

https://github.com/ZcashFoundation/zebra/runs/7918830518?check_suite_focus=true#step:6:143

This is not a blocking change for this PR, but it does block ticket #4910.

[teor2345]

I admin-merged this PR because it's low risk, and multiple CI failures are blocking Mergify.