fix(deps): update rust crate fern to v0.6.2 - autoclosed

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
fern	dependencies	patch	0.6.0 -> 0.6.2

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Release Notes

daboross/fern (fern)

v0.6.2

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• Add security warning for "colored" feature when using a global allocator
  to doc homepage and README.md. See
  fern-0.6.2 README.md
• Change examples to use env_logger-style formatting
• Improve main documentation example explanation
• Misc. style improvements (clippy lint fixes which have no functional change)

v0.6.1

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==================

• Document reopen feature requiring a feature flag
  (thanks [@​Palladinium]!)
• Fix typo in colors documentation (thanks [@​sourcefrog]!)
• Add support for reopen v1 under reopen-1 feature (thanks [@​vorner]!)
• Add syslog v6 support under syslog-6 feature (thanks folk at [@​EasyPost]!)
• Fix README badges

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