fix: usage of SSL certs in WeAreFrankController

Author: mvdhoek1

src/PrefillGravityForms/Controllers/WeAreFrankController.php

@@ -180,7 +180,7 @@ protected function requestEmbedded(string $bsn = ''): array
 
     protected function getDefaultCurlArgs(): array
     {
-        return [
+        $args = [
             CURLOPT_RETURNTRANSFER => true,
             CURLOPT_ENCODING => '',
             CURLOPT_MAXREDIRS => 10,
@@ -189,5 +189,12 @@ protected function getDefaultCurlArgs(): array
             CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
             CURLOPT_CUSTOMREQUEST => 'POST',
         ];
+
+        if ($this->settings->useSSLCertificates()) {
+            $args[CURLOPT_SSLCERT] = $this->settings->getPublicCertificate();
+            $args[CURLOPT_SSLKEY] = $this->settings->getPrivateCertificate();
+        }
+
+        return $args;
     }
 }