Change the label for the overall Gravity Forms Settings Save Button

gfroms-examples.php

function modify_gform_settings_save_button() {
	return '<input  type="submit" name="submit" value="' . esc_html__( 'Confirm Settings', 'gravityforms' ) . '" class="button-primary gfbutton my-button class"/> Remember, be responsible with what you save here!';

}
add_filter('gform_settings_save_button', 'modify_gform_settings_save_button');