EsLint v9 (#154)

* Upgrade ESLint and related configurations to version 9

- Update ESLint to version 9.19.0
- Migrate ESLint configurations to flat config format
- Remove deprecated ESLint config files
- Update package dependencies and configurations
- Simplify ESLint setup across packages
- Remove unnecessary ESLint config blocks from package.json files
- Improved CI caching with Turborepo tasks
- Removed duplicate styles

packages/ui/src/makerkit/cookie-banner.tsx

@@ -32,7 +32,7 @@ export function CookieBanner() {
     <DialogPrimitive.Root open modal={false}>
       <DialogPrimitive.Content
         onOpenAutoFocus={(e) => e.preventDefault()}
-        className={`dark:shadow-primary-500/40 fixed bottom-0 w-full max-w-lg border bg-background p-6 shadow-2xl delay-1000 duration-1000 animate-in fade-in zoom-in-95 slide-in-from-bottom-16 fill-mode-both lg:bottom-[2rem] lg:left-[2rem] lg:h-48 lg:rounded-lg`}
+        className={`dark:shadow-primary-500/40 bg-background animate-in fade-in zoom-in-95 slide-in-from-bottom-16 fill-mode-both fixed bottom-0 w-full max-w-lg border p-6 shadow-2xl delay-1000 duration-1000 lg:bottom-[2rem] lg:left-[2rem] lg:h-48 lg:rounded-lg`}
       >
         <div className={'flex flex-col space-y-4'}>
           <div>