chore: change rust-toolchain
file to toml format
#11528
Merged
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The
rust-toolchain
file containing only a Rust version number is deprecated in favor of a TOML-formattedrust-toolchain.toml
. Using the old format seems to make Dependabot unhappy --- it complains that:Therefore, this branch changes the toolchain file in this repo to the TOML format. This required updating the CI workflows that check that the toolchain matches to use a new regex.