feat(mailer): add CONTACT_EMAIL environment variable for email sending

lib/services/mailer.service.ts

@@ -11,7 +11,7 @@ export const sendCompanyOfferEmail = async (
   language: string,
 ) => {
   const { renderCompanyOfferEmail } = await import('@kit/email-templates');
-  const { html, subject, to } = await renderCompanyOfferEmail({
+  const { html, subject } = await renderCompanyOfferEmail({
     language,
     companyData: data,
   });
@@ -19,7 +19,7 @@ export const sendCompanyOfferEmail = async (
   await sendEmail({
     subject,
     html,
-    to,
+    to: process.env.CONTACT_EMAIL || '',
   });
 };