FreeBSD servers now use Python 3.11 by default.
During that update, some Python 3.9 packages seem to have been lost.
Fixes the following issue:
ID: letsencrypt_software                                                                 
    Function: pkg.installed                                                                        
        Name: py39-certbot                                                                         
      Result: False                                                                                
     Comment: Problem encountered installing package(s). Additional info follows:                                                                                                                       
                                                                                                   
              errors:                                                                              
                  - pkg: No packages available to install matching 'py39-certbot' have been found in the repositories
     Started: 18:23:00.534067                                                                      
    Duration: 302.017 ms                                                                           
     Changes: