Bump zarr from 2.9.5 to 2.10.0 in /requirements/CI-tests-conda

Bumps [zarr](https://github.com/zarr-developers/zarr-python) from 2.9.5 to 2.10.0.
- [Release notes](https://github.com/zarr-developers/zarr-python/releases)
- [Changelog](https://github.com/zarr-developers/zarr-python/blob/master/docs/release.rst)
- [Commits](zarr-developers/zarr-python@v2.9.5...v2.10.0)

---
updated-dependencies:
- dependency-name: zarr
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements/CI-tests-conda/requirements.txt

@@ -1,5 +1,5 @@
 lmdb==0.9.24
 msprime==1.0.2
 python-lmdb==0.96
-zarr==2.9.5
+zarr==2.10.0
 h5py==3.3.0