chore: Mathlib's lean-pr-testing-NNNN branches should use Batteries' lean-pr-testing-NNNN branches #5444
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The problem here was that in Mathlib's
lean-pr-testing-NNNN
branches, we were setting Batteries to anightly-testing-YYYY-MM-DD
branch. This means that when we merge or rebase a newnightly-with-mathlib
into a Lean PR, the corresponding Mathlib testing branch would keep using an old version of Batteries.We also make sure to bump Batteries if Mathlib's
lean-pr-testing-NNNN
branch already exists.