class HandlePutFormData
{
    public function handle(Request $request, Closure $next)
    {
        if (($request->isMethod('PUT') || $request->isMethod('PATCH')) &&
            str_contains($request->header('Content-Type'), 'multipart/form-data')) {

            $requestWithParsedBody = $request;

            try {
                [$post, $files] = request_parse_body();

                foreach ($post as $key => $value) {
                    $requestWithParsedBody->merge([$key => $value]);
                }

                foreach ($files as $key => $file) {
                    $requestWithParsedBody->files->set($key, $file);
                }

            } catch (RequestParseBodyException $e) {
                Log::error('HandlePutFormData::handle, failed to parse request body: ' . $e->getMessage());
                return $next($request);
            }

            return $next($requestWithParsedBody);
        }

        return $next($request);
    }
}

Route::put('/test-endpoint', function (Request $request) {
    return $request->all();
});

curl -X PUT -H "Content-Type: multipart/form-data" -F "name=test" -F "file=@example.txt" http://localhost:8000/test-endpoint