fs-repo-migrations: update to 2.0.2.

[lemmi]

This got unnecessarily hard to package. But using the auto download just takes ages. The latest release is missing the 11 to 12 migration. So the version number isn't quite correct.
Anyway, I thought I make it available in case someone needs this to try #37561.

Testing the changes

• I tested the changes in this PR: briefly

[CMB]

On musl x86_64, I couldn't get the fs-repo-11-to-12 migration to work.
It died with this:

panic: qtls.ClientHelloInfo doesn't match
goroutine 1 [running]:
github.com/marten-seemann/qtls-go1-15.init.0()
        /builddir/fs-repo-migrations-fs-repo-11-to-12-v1.0.2/fs-repo-11-to-12/vendor/github.com/marten-seemann/qtls-go1-15/unsafe.go:20 +0x132

[CMB]

I could also reproduce on glibc.
Looking into this a bit more, I think the cause is
that fs-repo-migrations is incompatible with Go 1.19.

[github-actions]

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