build(deps): bump numpy in /bindings/python/ext/pybind11/tests

Bumps [numpy](https://github.com/numpy/numpy) from 1.19.3 to 1.22.0.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](numpy/numpy@v1.19.3...v1.22.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

bindings/python/ext/pybind11/tests/requirements.txt

@@ -1,6 +1,6 @@
 build==0.8.0
 numpy==1.21.5; platform_python_implementation=="PyPy" and sys_platform=="linux" and python_version=="3.7"
-numpy==1.19.3; platform_python_implementation!="PyPy" and python_version=="3.6"
+numpy==1.22.0; platform_python_implementation!="PyPy" and python_version=="3.6"
 numpy==1.21.5; platform_python_implementation!="PyPy" and python_version>="3.7" and python_version<"3.10"
 numpy==1.22.2; platform_python_implementation!="PyPy" and python_version>="3.10" and python_version<"3.11"
 pytest==7.0.0