Bump pyansys-sphinx-theme from 0.2.2 to 0.2.3

Bumps [pyansys-sphinx-theme](https://github.com/pyansys/pyansys-sphinx-theme) from 0.2.2 to 0.2.3.
- [Release notes](https://github.com/pyansys/pyansys-sphinx-theme/releases)
- [Commits](ansys/ansys-sphinx-theme@v0.2.2...v0.2.3)

---
updated-dependencies:
- dependency-name: pyansys-sphinx-theme
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]