chore: update clang-tidy to 15

[Skylion007]

Description

• Update clang-tidy docker container to clang 15 and the new way of installing / generating Silekh docker containers.

Suggested changelog entry:

* Update clang-tidy to 15 in CI

[rwgk]

There is still one clang-tidy failure:

/__w/pybind11/pybind11/include/pybind11/stl.h:319:34: error: unchecked access to optional value [bugprone-unchecked-optional-access,-warnings-as-errors]
        return value_conv::cast(*std::forward<T>(src), policy, parent);
                                 ^

Please feel free to merge when that's resolved, with or without the suggested change.