Update dependency less-loader to v12

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
less-loader	^11.1.4 -> ^12.0.0

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Release Notes

webpack-contrib/less-loader (less-loader)

v12.2.0

Compare Source

Features

• add @rspack/core as an optional peer dependency (#​537) (71dd711)

v12.1.0

Compare Source

Features

• added the lessLogAsWarnOrErr option (#​536) (3c4e6e0)

v12.0.0

Compare Source

⚠ BREAKING CHANGES

• minimum supported Node.js version is 18.12.0 (#​533) (f70e832)

11.1.4 (2023-12-27)

Bug Fixes

• invalid dependencies with working directory (#​531) (2ec31a6)

11.1.3 (2023-06-08)

Bug Fixes

• perf: avoid using klona for less options (#​520) (8a63159)

11.1.2 (2023-05-31)

Bug Fixes

• remove unused v dependency (#​517) (8fd9206)

11.1.1 (2023-05-28)

Bug Fixes

• handling errors better (#​515) (5e0308e)
• make errors serializable (#​516) (68adcc2)

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