Bump serde_json from 1.0.52 to 1.0.53

[dependabot-preview]

Bumps serde_json from 1.0.52 to 1.0.53.

Release notes

Sourced from serde_json's releases.

v1.0.53

• Reduce unhelpful indentation in the {:#?} format of serde_json::Value
• Remove some unnecessary runtime checks from Serializer::collect_str

Commits

• 5c3711e Release 1.0.53
• 6ca3752 Downgrade some unnecessary runtime asserts to debug_assert
• eb383c0 Update arbitrary_precision Debug impl of Number to match normal one
• 351d847 Omit a layer of unnecessary nesting from Debug impl
• baae6d9 Add test for {:#?} format of Value
• 800a8d5 Update build status badge to GitHub Actions
• cb40c10 Remove AppVeyor configuration
• f255356 Add Windows CI in GitHub Actions
• edb1c31 Avoid repeating slow doctests and compiletests
• dffbe44 Remove Travis configuration
• Additional commits viewable in compare view

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[coveralls]

Pull Request Test Coverage Report for Build 313

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.5%) to 59.855%

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Totals
Change from base Build 311:	-0.5%
Covered Lines:	744
Relevant Lines:	1243

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💛 - Coveralls

[dependabot-preview]

Superseded by #69.