Bump numpy from 1.26.4 to 2.1.2

Bumps [numpy](https://github.com/numpy/numpy) from 1.26.4 to 2.1.2.
- [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...v2.1.2)

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

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

requirements.txt

@@ -1,7 +1,7 @@
 # This is used to build the CI test environment and so Github can track dependencies.
 xarray==2024.3.0
 pandas==2.2.2
-numpy==1.26.4
+numpy==2.1.2
 matplotlib==3.9.2
 dask[array, distributed]==2024.10.0
 requests==2.32.3