Bump walkdir from 2.3.1 to 2.3.2

Created by: dependabot[bot]

Bumps walkdir from 2.3.1 to 2.3.2.

Commits

• abf3a15 2.3.2
• 461f4a8 api: add convenience sort routines
• 3d1f2f2 readme: use HTTPS for links
• 0b3ff12 tests: replace "cfg(test)" with "cfg(doctest)" for readme testing
• bab4066 ci: set override to force selected Rust version
• See full diff in compare view

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