Error PHP

I have an intranet on a local server with xampp, I recently upgraded to php version 8.2.4, but now it throws some PHP errors. The WP version is 6.3.1 and the plugin version is 9.7.5.
The messages are:

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$chars is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 35

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$char_length is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 38

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$fonts is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 41

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$tmp_dir is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 48

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$img_size is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 51

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$bg is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 54

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$fg is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 57

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$base is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 60

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$font_size is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 63

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$font_char_width is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 66

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$img_type is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 69

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$file_mode is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 72

Deprecated: Creation of dynamic property wpdevReallySimpleCaptcha::$answer_file_mode is deprecated in …\wp-content\plugins\booking\js\captcha\captcha.php on line 75

Is there anything I should do to fix it? Regards.