feat: added user-locking on mfa failure

backend/src/services/smtp/smtp-service.ts

@@ -21,6 +21,7 @@ export enum SmtpTemplates {
   EmailVerification = "emailVerification.handlebars",
   SecretReminder = "secretReminder.handlebars",
   EmailMfa = "emailMfa.handlebars",
+  UnlockAccount = "unlockAccount.handlebars",
   AccessApprovalRequest = "accessApprovalRequest.handlebars",
   HistoricalSecretList = "historicalSecretLeakIncident.handlebars",
   NewDeviceJoin = "newDevice.handlebars",

backend/src/services/smtp/templates/unlockAccount.handlebars

@@ -0,0 +1,16 @@
+<html>
+
+  <head>
+    <meta charset="utf-8" />
+    <meta http-equiv="x-ua-compatible" content="ie=edge" />
+    <title>Your Infisical account has been locked</title>
+  </head>
+
+  <body>
+    <h2>Unlock your Infisical account</h2>
+    <p>Your account has been temporarily locked due to multiple failed login attempts. </h2>
+    <a href="{{callback_url}}?token={{token}}">Unlock your account now</a>
+    <p>If these attempts were not made by you, reset your password immediately.</p>
+  </body>
+
+</html>