build(deps): bump qtpy from 2.4.2 to 2.4.3

Bumps [qtpy](https://github.com/spyder-ide/qtpy) from 2.4.2 to 2.4.3.
- [Release notes](https://github.com/spyder-ide/qtpy/releases)
- [Changelog](https://github.com/spyder-ide/qtpy/blob/master/CHANGELOG.md)
- [Commits](spyder-ide/qtpy@v2.4.2...v2.4.3)

---
updated-dependencies:
- dependency-name: qtpy
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>