Revert "Remove deprecated Stylelint configuration and update dependencies for improved linting support"

This reverts commit 2f34c938b4.

stylelint.config.mjs

@@ -1,35 +0,0 @@
-import stylistic from '@stylistic/stylelint-config'
-
-const prettierOwned = Object.fromEntries(Object.keys(stylistic.rules).map((rule) => [rule, null]))
-
-export default {
-  extends: ['stylelint-config-twbs-bootstrap'],
-  ignoreFiles: ['**/node_modules/**', '**/dist/**'],
-  rules: {
-    ...prettierOwned,
-    'scss/dollar-variable-colon-space-after': null,
-    'selector-no-qualifying-type': null,
-    'scss/at-function-named-arguments': null,
-  },
-  overrides: [
-    {
-      files: ['core/scss/bootstrap/**/*.scss', 'core/scss/mixins/bootstrap/**/*.scss'],
-      rules: { 'scss/operator-no-unspaced': null },
-    },
-    {
-      files: ['core/scss/tests/**/*.scss'],
-      rules: { 'declaration-no-important': null, 'color-named': null },
-    },
-    {
-      files: ['core/scss/vendor/**/*.scss'],
-      rules: {
-        'declaration-no-important': null,
-        'selector-class-pattern': null,
-        'selector-max-class': null,
-        'selector-max-compound-selectors': null,
-        'custom-property-no-missing-var-function': null,
-        'scss/selector-no-redundant-nesting-selector': null,
-      },
-    },
-  ],
-}