mailu/core/base
bors[bot] a8630c5a3b
Merge
2550: Webmail hardening r=mergify[bot] a=nextgens

## What type of PR?

enhancement

## What does this PR do?

Add [Snuffleupagus](https://github.com/jvoisin/snuffleupagus/) (a modern Suhosin replacement) to protect webmails.

It may be possible to harden further, by encrypting some of the cookies and auditing the usage of gpg more closely.

This seems to work for me.

### Related issue(s)

## Prerequisites
Before we can consider review and merge, please make sure the following list is done and checked.
If an entry in not applicable, you can check it or remove it from the list.

- [x] In case of feature or enhancement: documentation updated accordingly
- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.


Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>
..
libs doh
Dockerfile Pin what we get from edge
requirements-build.txt Update build reqs and fix armv7 build
requirements-dev.txt ghost is right, it should be pinned here too
requirements-prod.txt Rollback to mysql-connector-python==8.0.29