deps: bump github.com/BurntSushi/toml from 1.4.0 to 1.6.0 in the go-modules group

[dependabot]

Bumps the go-modules group with 1 update: github.com/BurntSushi/toml.

Updates github.com/BurntSushi/toml from 1.4.0 to 1.6.0

Release notes

Sourced from github.com/BurntSushi/toml's releases.

v1.6.0

TOML 1.1 is now enabled by default. The TOML changelog has an overview of changes: https://github.com/toml-lang/toml/blob/main/CHANGELOG.md

Also two small fixes:

• Encode large floats as exponent syntax so that round-tripping things like 5e+22 is correct.

• Using duplicate array keys would not give an error:

  arr = [1]
  arr = [2]
  

  This will now correctly give a "Key 'arr' has already been defined" error.

v1.5.0

Mostly some small bugfixes, with a few small new features:

• Add Position.Col, to mark the column an error occurred (#410)

• Print more detailed errors in the tomlv CLI.

• Ensure ParseError.Message is always set (#411)

• Allow custom string types as map keys (#414)

• Mark meta keys as decoded when using Unmarshaler interface (#426)

• Fix encoding when nested inline table ends with map (#438)

• Fix encoding of several layers of embedded structs (#430)

• Fix ErrorWithPosition panic when there is no newline in the TOML document (#433)

Commits

• 5253492 Enable TOML 1.1 by default (#457)
• e954445 Reject duplicate arrays (#455)
• 6b16cbd Update toml-test test cases from upstream (#456)
• 011fa2b Ensure constant format strings in wf calls
• 4b439bf Remove itemNil
• a473c12 Add test for out of range float64
• b535ff8 Add some boring tests for lex.go
• 6011ef0 Remove unreachable condition in lexTableNameStart
• c8ca9e6 Remove unreachable condition
• 1121f81 Make tomlv read from stdin
• Additional commits viewable in compare view

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