add hcaptcha reset

src/scripts/contact-form.js

@@ -147,6 +147,7 @@ form.addEventListener("submit", function(event) {
             console.log('Success:', data);
             showMessage('Form submitted successfully!', false);
             form.reset();
+            hcaptcha.reset();
         })
         .catch((error) => {
             console.error('Error:', error);