Bump strum from 0.23.0 to 0.24.0

Sourced from strum's changelog.

0.24.0

• #212. Fix some clippy lints

• #209. Use core instead of std in a few places.

• #206. Add get_documentation() to EnumMessage. This provides the ability to get the doc comment for a variant. Currently, very little formatting is done. That is subject to change. Please do not abuse this feature. Rust docs are meant for developer documentation, not long messages for users. However, this may be useful in some situations so we've added support for it.

• #202. Add a missing doc comment

• #201. Upgrade Heck version

0.23.1

• #193 Fixes an ambiguity introduced by #186 when your enum has a variant called Error.

• #192 The work done in #189 was lost in other PR's. This re-added the functionality to support no-std.

• See full diff in compare view

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