deps: update tomlkit requirement from <=0.11.6 to <=0.12.1

[dependabot]

Updates the requirements on tomlkit to permit the latest version.

Release notes

Sourced from tomlkit's releases.

0.12.1

Full Changelog: python-poetry/tomlkit@0.12.0...0.12.1

Changelog

Sourced from tomlkit's changelog.

[0.12.1] - 2023-07-27

Fixed

• Make float and int hashable.

[0.12.0] - 2023-07-27

Added

• Allow users to specify encoders for custom types. (#296)

Fixed

• Fix the incorrect sort when building a table with dotted keys.
• Complete the methods required for integer and float items. (#307)
• Replace the deprecated usage of datetime.utcnow(). (#308)
• Minor performance improvements when iterating over the escape sequences. (#304)

[0.11.8] - 2023-04-27

Fixed

• Remove the extra indentations added when parsing nested sub-tables. (#256)
• Ignore the CRLF immediately following a multiple basic string opening. (#262)
• Stringifying subtables and nested tables in arrays of tables. (#283)
• Messed table structure when building a table with dotted keys. (#284)

[0.11.7] - 2023-03-27

Fixed

• Parse empty table name if it is quoted. (#258)
• Fix a bug that remove last element of an Inline Table leaves a comma. (#259)
• Parse datetime when it is followed by a space. (#260)
• Fix the unwrap() method for Container children values which sometimes returns an internal object if the table is an out-of-order table. (#264)
• Fix the wrong return type when doing arithmetic operations between integers and floats. (#270)

[0.11.6] - 2022-10-27

Fixed

• Allow broader type for toml file path value (#243)
• Auto-determine if a table is a super table if not specified explicitly. (#245)

[0.11.5] - 2022-09-28

Fixed

• Fix the type annotation of unwrap() and datetime parsing. (#229)

... (truncated)

Commits

• 7ed7d3a fix: Make float and int hashable
• 653a375 chore: update release action
• 27ad8ff chore: release 0.12.0
• e2adb95 fix: replace deprecated usage of datetime.utcnow (#308)
• e07f6a1 fix: full methods of integer and float (#307)
• 9e39a63 perf: only iter on found escape sequences (#304)
• 8edb46c chore(deps-dev): bump pygments from 2.14.0 to 2.15.0 (#302)
• 45c6177 chore(deps-dev): bump certifi from 2022.12.7 to 2023.7.22 (#303)
• f976291 README: Link to readthedocs for the documentation (#300)
• a3cb8a2 feat: allow users to register custom encoders (#296)
• Additional commits viewable in compare view

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