1b6b210 Update to 1.22.0 (#2020089)

Authored and Committed by fschwarz a year ago
    Update to 1.22.0 (#2020089)
    
    The certbot GPG signing key has changed as mentioned in
    https://community.letsencrypt.org/t/certbot-1-21-0-release/164700
    
        
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