Dependency cleanup fails when building with non-default branch stdlibs/deps

[LilithHafner]

https://buildkite.com/julialang/julia-master/builds/32023#018ceb18-ab52-44fe-8076-00994ce88ac4/2723-2724

This is a CI issue as well as something I've seen locally. I think it's new that it causes CI to fail to run tests.

[giordano]

Am I missing something or you didn't refresh the checksums in #52821? For a dep use

make -f contrib/refresh_checksums.mk -j depname

For a stdlib use

git rm -r deps/checksums/stdlibname-*
make -C stdlib -j checksum-stdlibname

[LilithHafner]

Ah! The build process did that automatically for me, but I still needed to check in the updated deps/checksums/* files. Thank you.