Automatic revision bumps

[mahrud]

Would be nice to automatically rebuild bottles when requirements bump revisions or versions; for instance a version bump in ntl caused factory and M2 to not be able to find the dynamic libraries they were linked against, which required rebuilding both.

The alternative solution is static linking, but that's creates larger binaries and in general is not in the spirit of brew bottles.

[mahrud]

Perhaps a nightly action to check if flint is updated would suffice.

[mahrud]

Along with this, we shouldn't rebuild arm64 bottles by hand.

[mahrud]

@mikestillman I believe gfan, frobby, and Macaulay2 might need new bottles for arm64 because of compiler updates. Could you update your brew and rebottle them? The instructions are here.