Update dependency eslint-config-stylelint to v26

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
eslint-config-stylelint	23.0.0 -> 26.0.0

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Release Notes

stylelint/eslint-config-stylelint (eslint-config-stylelint)

v26.0.0

Compare Source

• Removed: support for Node.js less than 20.19.0.
• Changed: become a pure ESM package.
• Changed: languageOptions.ecmaVersion from 2023 to 2025.
• Added: no-duplicate-imports rule.

v25.0.1

Compare Source

• Fixed: npm package publishing with trusted publisher.

v25.0.0

Compare Source

• Changed: bump @stylistic/eslint-plugin from v4 to v5.
• Changed: bump eslint-plugin-jest from v28 to v29.

v24.0.0

Compare Source

• Changed: eslint-plugin-n config from flag/recommended-script to flag/recommended for both CommonJS and ES modules.
• Changed: bump @stylistic/eslint-plugin from v2 to v4.
• Changed: bump globals from v15 to v16.

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