Update dependency grunt-eslint to v26

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
grunt-eslint	^21.0.0 → ^26.0.0

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Release Notes

sindresorhus/grunt-eslint (grunt-eslint)

v26.0.0

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Breaking

• Require Node.js 20 e677dd9
• It now outputs to console even when outputFile option is specified. Specify silent: true to get the old behavior.

Improvements

• Add support for dual console and file output 857b19b
• Add support for extends option 838335b
• Document flags option for experimental ESLint features c495bd1

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v25.0.0

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Breaking

• Require Node.js 18 (#​175) 81834b4
• Flat config is now required by default
  • If you want to use non-flat config, you need to pass the ESLINT_USE_FLAT_CONFIG environment variable

Improvements

• Update to ESLint 9 (#​175) 81834b4
• Support flat config (#​175) 81834b4

v24.3.0

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• Update dependencies 495118b

v24.2.0

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• Update dependencies 826ca5f

v24.1.0

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• Support async formatters (#​174) 89eb056

v24.0.1

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• Fix the plugin not finishing in some cases 1322e30

v24.0.0

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Breaking

• Upgrade to ESLint 8 (#​171) dbaf9d5
• Require Node.js 12 (#​171) dbaf9d5
• Due to ESLint changes, some of the options (the ones that are not documented in the readme here) have changed. For example, configFile changed to overrideConfigFile. Consult the ESLint docs for the available options.

v23.0.0

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Breaking

• Upgrade to ESLint 7 (#​167) a8f45f6
• Require Node.js 10 (#​167) a8f45f6

v22.0.0

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Breaking:

• Upgrade to ESLint 6 7707f60
• Require Node.js 8 7707f60

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