The password for the next level is stored in the file data.txt, where all lowercase (a-z) and uppercase (A-Z) letters have been rotated by 13 positions
bandit11@melinda:~$ cat data.txt | tr ’n−za−mN−ZA−OM’ ’a−zA−Z’
The password is 5Te8Y4drgCRfCx8ugdwuEX8KFC6k2EUu