Update render for buffer sequence and handle (#4831)

* fix: Add capitalize render name of `py::buffer` and `py::sequence`

* fix: Render `py::handle` same way as `py::object`

* tests: Fix tests `handle` -> `object`

* tests: Test capitaliation of `py::sequence` and `py::buffer`

* style: pre-commit fixes

* fix: Render `py::object` as `Any`

* Revert "fix: Render `py::object` as `Any`"

This reverts commit 7861dcfabb78ac210b4c67c35a0d47fb67525a96.

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Ralf W. Grosse-Kunstleve <rwgk@google.com>