chore(deps): update dependency eslint to v9 (#4533)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Stephan Köninger <stephan.koeninger@codecentric.de>

Author: renovate[bot]

spring-boot-admin-server-ui/.eslintrc.js

@@ -0,0 +1,74 @@
+import { FlatCompat } from '@eslint/eslintrc';
+import js from '@eslint/js';
+import typescriptEslint from '@typescript-eslint/eslint-plugin';
+import prettier from 'eslint-plugin-prettier';
+import pluginVue from 'eslint-plugin-vue';
+import { defineConfig, globalIgnores } from 'eslint/config';
+import globals from 'globals';
+import parser from 'vue-eslint-parser';
+
+const compat = new FlatCompat({
+  recommendedConfig: js.configs.recommended,
+  allConfig: js.configs.all,
+});
+
+export default defineConfig([
+  ...pluginVue.configs['flat/recommended'],
+  {
+    languageOptions: {
+      sourceType: 'module',
+      globals: {
+        ...globals.browser,
+        ...globals.node,
+        globalThis: false,
+        window: false,
+      },
+
+      parser: parser,
+      ecmaVersion: 2020,
+
+      parserOptions: {
+        parser: '@typescript-eslint/parser',
+      },
+    },
+
+    extends: compat.extends(
+      'plugin:@typescript-eslint/recommended',
+      'plugin:prettier/recommended',
+    ),
+
+    plugins: {
+      prettier,
+      '@typescript-eslint': typescriptEslint,
+    },
+
+    rules: {
+      'no-console': [
+        'error',
+        {
+          allow: ['warn', 'error'],
+        },
+      ],
+
+      'vue/multi-word-component-names': 'off',
+      'vue/no-v-html': 'off',
+      'vue/no-reserved-component-names': 'off',
+      'vue/no-v-text-v-html-on-component': 'off',
+
+      quotes: [
+        2,
+        'single',
+        {
+          avoidEscape: true,
+        },
+      ],
+    },
+  },
+  globalIgnores(['**/dist']),
+  {
+    rules: {
+      'no-undef': 'off',
+      '@typescript-eslint/no-explicit-any': 'off',
+    },
+  },
+]);