[Certbot-dev] Certbot 1.19.0 release

[Brad Warren]

We just released Certbot 1.19.0. The changelog entry for the release is:

## 1.19.0 - 2021-09-07

### Added

* The certbot-dns-rfc2136 plugin always assumed the use of an IP address as the
  target server, but this was never checked. Until now. The plugin raises an error
  if the configured target server is not a valid IPv4 or IPv6 address.
* Our acme library now supports requesting certificates for IP addresses.
  This feature is still unsupported by Certbot and Let's Encrypt.

### Changed

* Several attributes in `certbot.display.util` module are deprecated and will
  be removed in a future release of Certbot. Any import of these attributes will
  emit a warning to prepare the transition for developers.
* `zope` based interfaces in `certbot.interfaces` module are deprecated and will
  be removed in a future release of Certbot. Any import of these interfaces will
  emit a warning to prepare the transition for developers.
* We removed the dependency on `chardet` from our acme library. Except for when
  downloading a certificate in an alternate format, our acme library now
  assumes all server responses are UTF-8 encoded which is required by RFC 8555.

### Fixed

* Fixed parsing of `Define`d values in the Apache plugin to allow for `=` in the value.
* Fixed a relatively harmless crash when issuing a certificate with `--quiet`/`-q`.

More details about these changes can be found on our GitHub repo.