build(deps): bump serde from 1.0.205 to 1.0.206

[dependabot[bot]]

Bumps serde from 1.0.205 to 1.0.206.

Release notes

Sourced from serde's releases.

v1.0.206

• Improve support for flatten attribute inside of enums (#2567, thanks @​Mingun)

Commits

• 85c73ef Release 1.0.206
• 5ba1796 Resolve doc_markdown pedantic lint on regression test function
• e52b7b3 Touch up PR 2567
• 84c7419 Merge pull request #2794 from dtolnay/neverread
• 536221b Temporarily ignore collection_is_never_read on FlattenSkipDeserializing
• fc55ac7 Merge pull request #2567 from Mingun/fix-2565
• 2afe5b4 Add regression test for issue #2792
• b4ec259 Correctly process flatten fields in enum variants
• c3ac7b6 Add regression test for issue #1904
• 24614e4 Add regression test for issue #2565
• See full diff in compare view

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[dependabot[bot]]

Superseded by #378.