Deps: Bump dill from 0.3.7 to 0.3.8 (#577)

Bumps [dill](https://github.com/uqfoundation/dill) from 0.3.7 to 0.3.8.
- [Release notes](https://github.com/uqfoundation/dill/releases)
- [Commits](uqfoundation/dill@dill-0.3.7...0.3.8)

---
updated-dependencies:
- dependency-name: dill
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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