ci: Pin coverage toolchain to nightly-2025-11-27
#2080
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Description
code_coverage.ymlstarted failing as can be seen in a recent CI run. As a workaround I set the toolchain in the coverage workflow tonightly-2025-11-27which is the version of the compiler in use the last time there was a successful coverage run.The cause is unknown (to me) and likely doesn't originate from a crate in
bdk. Assuming that a fix can be found, we can eventually revert this or otherwise keep the toolchain incode_coverage.ymlup to date as needed.Changelog notice
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