Bump numpy from 1.26.4 to 2.1.1

Bumps [numpy](https://github.com/numpy/numpy) from 1.26.4 to 2.1.1.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](numpy/numpy@v1.26.4...v2.1.1)

---
updated-dependencies:
- dependency-name: numpy
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

setup.py

@@ -38,7 +38,7 @@
         'matplotlib==3.9.2',
         'nbconvert==7.16.4',
         'nbformat==5.10.4',
-        'numpy==1.26.4',
+        'numpy==2.1.1',
         'pandas==2.2.3',
     ],
     cmdclass=versioneer.get_cmdclass(),