Test if sync works with 1 letter changed in the certificate.

To test the security of the setup, first verify the sync functions properly, then modify 1 letter in the certificates and check if the sync worked.

Test for scenarios:

1. Change in host:
   
   1.1 Modify a single character in: ca.cert.pem
   
   1.1 Modify a single character in: .cert.pem
   
   1.1 Modify a single character in: ,key.pem


2. Change in client
   
   2.1 Modify a single character in: ca.cert.pem
   
   2.1 Modify a single character in: .cert.pem
   
   2.1 Modify a single character in: ,key.pem

And report the results here and in a general text describing the weaknesses in the security of the current implementation of this installation procedure of taskwarrior.

Start by verifying that sync works before changing any files. Then test the host and client scenarios by changing one character in ca.cert.pem, .cert.pem, and ,key.pem, recording whether synchronization still works. Report the results here and in a general text describing weaknesses in the installation procedure's security.

Written by the indexing model from the issue text.