Bump msprime from 1.4.0 to 1.4.1 in /requirements/CI

Bumps [msprime](https://github.com/tskit-dev/msprime) from 1.4.0 to 1.4.1.
- [Release notes](https://github.com/tskit-dev/msprime/releases)
- [Changelog](https://github.com/tskit-dev/msprime/blob/main/CHANGELOG.md)
- [Commits](tskit-dev/msprime@1.4.0...1.4.1)

---
updated-dependencies:
- dependency-name: msprime
  dependency-version: 1.4.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements/CI/conda.txt

@@ -1,2 +1,2 @@
-msprime==1.4.0
+msprime==1.4.1
 slim==5.1