roachprod: fix update & get latest

[srosenberg]

TBD

Epic: none Fixes: #120750 Epic: CRDB-8035

Release note: None

[cockroach-teamcity]

This change is 

[srosenberg]

Emulated "staleness" check which emits this warning in roachprod,

roachprod
WARN: roachprod binary is >= 2 weeks old (569h7m14.325s); latest sha: "abcdef"
WARN: Consider updating the binary: `roachprod update`

[rickystewart]

Separately, lots of lint failures. Consider using lintonbuild so you don't have to go back-and-forth with CI :)

[srosenberg]

Consider using lintonbuild so you don't have to go back-and-forth with CI :)

I did for a while actually, until it got too slow :) Especially, when you're doing multiple builds (on different branches) back-to-back.

[srosenberg]

Everything is now green and ready to go. PTAL!

[srosenberg]

TFTR!

bors r=rickystewart

[craig[bot]]

Build succeeded:

• linux_amd64_build
• docker_image_amd64
• unit_tests
• local_roachtest_fips
• linux_arm64_build
• windows_build
• examples_orms
• acceptance
• macos_amd64_build
• local_roachtest
• check_generated_code
• macos_arm64_build
• lint
• linux_amd64_fips_build

[blathers-crl[bot]]

Encountered an error creating backports. Some common things that can go wrong:

1. The backport branch might have already existed.
2. There was a merge conflict.
3. The backport branch contained merge commits.

You might need to create your backport manually using the backport tool.

---

error creating merge commit from 780b2982e88d9cdc3de98390285a1ec480db58bf to blathers/backport-release-23.2-124592: POST https://api.github.com/repos/cockroachdb/cockroach/merges: 409 Merge conflict []

you may need to manually resolve merge conflicts with the backport tool.

Backport to branch 23.2.x failed. See errors above.

---

error creating merge commit from 780b2982e88d9cdc3de98390285a1ec480db58bf to blathers/backport-release-24.1-124592: POST https://api.github.com/repos/cockroachdb/cockroach/merges: 409 Merge conflict []

you may need to manually resolve merge conflicts with the backport tool.

Backport to branch 24.1.x failed. See errors above.

---

_{:owl: Hoot! I am a Blathers, a bot for CockroachDB. My owner is dev-inf.}

[renatolabs]

We can close #120750 now, yes? Or was there a reason this PR was only marked as Informs?

[rickystewart]

@renatolabs Check out the discussion here.