Update pytest requirement in /src/bindings/python

Updates the requirements on [pytest](https://github.com/pytest-dev/pytest) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@5.0.0...8.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:production
...

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

src/bindings/python/constraints.txt

@@ -2,7 +2,7 @@
 numpy>=1.16.6,<1.27  # Python bindings, frontends
 
 # pytest
-pytest>=5.0,<7.5
+pytest>=5.0,<8.1
 pytest-dependency==0.6.0
 pytest-html==4.1.1
 pytest-timeout==2.2.0