chore(deps): update dependency tomlkit to ^0.8.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
tomlkit	^0.7.2 -> ^0.8.0

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Release Notes

sdispater/tomlkit

v0.8.0

Compare Source

Changed

• Drop support for Python<3.6. (#​151)
• Comply with TOML v1.0.0. (#​154)

Fixed

• Support copy protocols for table items. (#​65)
• Escape characters in double quoted key string. (#​136)
• Fix the invalid dumping output of multiline array when it is empty. (#​139)
• Fix a bug that tomlkit accepts an invalid table with missing =. (#​141)
• Fix the invalid dumping output when the key is empty. (#​143)
• Fix incorrect string returned by dumps when moving/renaming table. (#​144)
• Fix inconsistent dumps when replacing existing item with nested table. (#​145)
• Fix invalid dumps output when appending to a multiline array. (#​146)
• Fix the KeyAlreadyPresent when the table is separated into multiple parts. (#​148)
• Preserve the line endings in TOMLFile. (#​149)

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[coveralls]

Pull Request Test Coverage Report for Build 1628230367

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 96.464%

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Totals
Change from base Build 1628168346:	0.0%
Covered Lines:	1942
Relevant Lines:	1990

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💛 - Coveralls

[github-actions]

🎉 This PR is included in version 0.30.0 🎉

The release is available on:

• v0.30.0
• GitHub release

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