Update numpydoc requirement from ~=1.1.0 to ~=1.2 (#96)

Updates the requirements on [numpydoc](https://github.com/numpy/numpydoc) to permit the latest version.
- [Release notes](https://github.com/numpy/numpydoc/releases)
- [Changelog](https://github.com/numpy/numpydoc/blob/main/doc/release_notes.rst)
- [Commits](numpy/numpydoc@v1.1.0...numpydoc-1.2)

---
updated-dependencies:
- dependency-name: numpydoc
  dependency-type: direct:development
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -11,7 +11,7 @@ coverage ~=6.3
 flake8 ~=4.0.1
 pytest ~=6.2.5
 ipython ~=7.30.1
-numpydoc ~=1.1.0
+numpydoc ~=1.2
 sphinx ~=4.3.2
 sphinx-copybutton ~=0.4.0
 sphinx_rtd_theme ~=1.0.0