Introducing ARM64 support for the `jsii/superchain` docker image using
the multi-arch capabilities of `docker buildx`. This prompted a couple
of changes in the image, which should be fine for the majority of
use-cases, but is a breaking change in certain edge cases... So this change
also changes the image tagging model, so that users are able to reliably
depend on a particular linux distribution ancestry (`debian:buster-slim`
being the only offered option at this moment).

The new image is based off `debian:10-slim`, as unfortunately, binary
distributions of some of the image contents are not available for ARM64
platform on the RHEL/CentOS-based distributions (which `amazonlinux:2`
is). This means packages now get installed from `apt` instead of `yum`.

Image testing (by building `jsii` within the image) is now part of the
image build process itself, instead of being separated, as this allows
testing on all supported architectures (which is otherwise somewhat more
difficult to achieve).

BREAKING CHANGE: the `jsii/superchain` image tags `:latest`, `:nightly`,
`:node10` and `:node14` are no longer maintained. Users should migrate to
the new debian-based tags starting with `:1-buster-slim`.

Fixes #2930

See [CHANGELOG](https://github.com/aws/jsii/blob/merge-back/1.33.0/CHANGELOG.md)

…me (#2956)

When a type extends a jsii class, any additional interfaces implemented
via the `@jsii.implements` annotation were not properly registered, and
overrides were not properly discovered.

This was the combination of a code-generation bug, which caused the type
passed to the `create` kernel method to be that of the jsii class,
instead of the dynamic class (`self.__class__`); and a kernel bug, which
caused those inheritance graphs to completely skip overrides detection.

Fixes #2963



---

By submitting this pull request, I confirm that my contribution is made under the terms of the [Apache 2.0 license].

[Apache 2.0 license]: https://www.apache.org/licenses/LICENSE-2.0

…ckages/@jsii/python-runtime (#2957)

Updates the requirements on [cattrs](https://github.com/Tinche/cattrs) to permit the latest version.
- [Release notes](https://github.com/Tinche/cattrs/releases)
- [Changelog](https://github.com/Tinche/cattrs/blob/master/HISTORY.rst)
- [Commits](Tinche/cattrs@v1.7.1...v1.8.0)

---
updated-dependencies:
- dependency-name: cattrs
  dependency-type: direct:production

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Romain Marcadier <[email protected]>

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: 👨🏻‍💻 Romain Marcadier <[email protected]>

arbitary -> arbitrary

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: 👨🏻‍💻 Romain Marcadier <[email protected]>

Using the hint allows any interface to always be treated as a struct (as
long as all it's properties are readonly and it has no methods) even if
it has an `I`-prefixed name.

The xmldom package has moved. See xmldom/xmldom#271

Fixes #2969

Co-authored-by: 👨🏻‍💻 Romain Marcadier <[email protected]>

See CHANGELOG.