Build(deps): bump the pip-deps group in /requirements with 2 updates (#287)

Bumps the pip-deps group in /requirements with 2 updates: [pypandoc](https://github.com/JessicaTegner/pypandoc) and [pytest](https://github.com/pytest-dev/pytest).


Updates `pypandoc` from 1.15 to 1.16
- [Release notes](https://github.com/JessicaTegner/pypandoc/releases)
- [Changelog](https://github.com/JessicaTegner/pypandoc/blob/master/release.md)
- [Commits](JessicaTegner/pypandoc@v1.15...v1.16)

Updates `pytest` from 8.4.2 to 9.0.0
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.4.2...9.0.0)

---
updated-dependencies:
- dependency-name: pypandoc
  dependency-version: '1.16'
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip-deps
- dependency-name: pytest
  dependency-version: 9.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: pip-deps
...

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

Author: dependabot[bot]

requirements/requirements_build.txt

@@ -9,7 +9,7 @@ requests>=2.22.0
 protobuf==6.33.0
 grpcio==1.76.0
 grpcio-tools==1.76.0
-pytest==8.4.2
+pytest==9.0.0
 pytest-cov==5.0.0
 pytest-grpc==0.8.0
 conan>=1.48.0,<2

requirements/requirements_docs.txt

@@ -2,7 +2,7 @@ Sphinx==8.2.3
 jupyter_sphinx==0.5.3
 numpydoc==1.9.0
 ansys_sphinx_theme==1.6.3
-pypandoc==1.15
+pypandoc==1.16
 pytest-sphinx==0.6.3
 sphinx-autobuild==2025.8.25
 sphinx-autodoc-typehints==3.5.2