Use Pydantic to systematically validate a first batch of endpoints in `synapse.rest.client.account`. (#13188)

This reverts commit f383b9b3. Other PRs
were seeing mypy failures that looked to be related to mypy-zope.
Confusingly, we didn't see this on #13521.

Revert this for now and investigate later.

frozendict 2.3.3 includes fixes for memory leaks that get triggered during `/sync`.

Co-authored-by: David Robertson <davidr@element.io>

`frozendict` 2.3.2 includes a fix for a memory leak in
`frozendict.__hash__`. This likely has no impact outside of the
deprecated `/initialSync` endpoint, which uses `StreamToken`s,
containing `RoomStreamToken`s, containing `frozendict`s, as cache keys.

Signed-off-by: Sean Quah <seanq@matrix.org>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: David Robertson <davidr@element.io>

Bumps [pyjwt](https://github.com/jpadilla/pyjwt) from 2.3.0 to 2.4.0.
- [Release notes](https://github.com/jpadilla/pyjwt/releases)
- [Changelog](https://github.com/jpadilla/pyjwt/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/jpadilla/pyjwt/compare/2.3.0...2.4.0

)

---
updated-dependencies:
- dependency-name: pyjwt
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* Move `pympler` back into the `all` extras

Undoes a change I made in #12381. I can't fully remember my reasoning,
but this changed the contents of the debian packages in a backwards
incompatible way. We're not aware of anyone who's been bitten by this,
but we still want to fix it.

To the reviewer: please be convinced that the debian packages will still
contain pympler after this change.

* Debian changelog entry to keep the linter happy

Not enforced in config yet. One day.

* poetry update matrix-synapse-ldap3

* Newsfile

Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>

Co-authored-by: Dan Callahan <danc@element.io>

* Specify `tls` extra for Twisted dependency.

It was already pulled in for us by `treq`, but we should be explicit
that we do use the `tls` functionality of Twisted directly.

* Mark `idna` as dev-dependency

This doesn't actually change anything, as `Twisted[tls]` will put it in
as a main dependency anyway.

Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Co-authored-by: Brendan Abolivier <babolivier@matrix.org>