Bump the requirements group across 1 directory with 3 updates (#2129)

Bumps the requirements group with 3 updates in the / directory: [numpy](https://github.com/numpy/numpy), [ipywidgets](https://github.com/jupyter-widgets/ipywidgets) and [azure-storage-blob](https://github.com/Azure/azure-sdk-for-python).


Updates `numpy` from 2.0.1 to 2.1.0
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](numpy/numpy@v2.0.1...v2.1.0)

Updates `ipywidgets` from 8.1.3 to 8.1.5
- [Release notes](https://github.com/jupyter-widgets/ipywidgets/releases)
- [Commits](jupyter-widgets/ipywidgets@8.1.3...8.1.5)

Updates `azure-storage-blob` from 12.16.0 to 12.21.0
- [Release notes](https://github.com/Azure/azure-sdk-for-python/releases)
- [Changelog](https://github.com/Azure/azure-sdk-for-python/blob/main/doc/esrp_release.md)
- [Commits](Azure/azure-sdk-for-python@azure-storage-blob_12.16.0...azure-storage-blob_12.21.0)

---
updated-dependencies:
- dependency-name: numpy
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: requirements
- dependency-name: ipywidgets
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: requirements
- dependency-name: azure-storage-blob
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: requirements
...

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

Author: dependabot[bot]

requirements_dev_numpy.txt

@@ -1,4 +1,4 @@
 # Break this out into a separate file to allow testing against
 # different versions of numpy. This file should pin to the latest
 # numpy version.
-numpy==2.0.1
+numpy==2.1.0

requirements_dev_optional.txt

@@ -3,11 +3,11 @@
 lmdb==1.5.1; sys_platform != 'win32'
 # optional library requirements for Jupyter
 ipytree==0.2.2
-ipywidgets==8.1.3
+ipywidgets==8.1.5
 # optional library requirements for services
 # don't let pyup change pinning for azure-storage-blob, need to pin to older
 # version to get compatibility with azure storage emulator on appveyor (FIXME)
-azure-storage-blob==12.16.0 # pyup: ignore
+azure-storage-blob==12.21.0 # pyup: ignore
 redis==5.0.8
 types-redis
 types-setuptools