[6.x] Add new lost connection message to DetectsLostConnections for Vapor (#39209)

Vapor with serverless PostgreSQL threw this:

`SQLSTATE[08006] [7] could not translate host name "xxx.eu-central-1.rds.amazonaws.com" to address: Try again (SQL: select * from "personal_access_tokens" where "personal_access_tokens"."id" = 1 limit 1)`

Author: Rihards Ščeredins

src/Illuminate/Database/DetectsLostConnections.php

@@ -55,6 +55,7 @@ protected function causedByLostConnection(Throwable $e)
             'SQLSTATE[08006] [7] could not connect to server: Connection refused Is the server running on host',
             'SQLSTATE[HY000]: General error: 7 SSL SYSCALL error: No route to host',
             'The client was disconnected by the server because of inactivity. See wait_timeout and interactive_timeout for configuring this behavior.',
+            'SQLSTATE[08006] [7] could not translate host name',
         ]);
     }
 }