Bump deps/openvic-dataloader from 1f785f0 to b6a4bac

Bumps [deps/openvic-dataloader](https://github.com/OpenVicProject/OpenVic-Dataloader) from `1f785f0` to `b6a4bac`.
- [Commits](OpenVicProject/OpenVic-Dataloader@1f785f0...b6a4bac)

---
updated-dependencies:
- dependency-name: deps/openvic-dataloader
  dependency-version: b6a4bace96ede417f3699dd143484d140ddd5c37
  dependency-type: direct:production
...

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

Author: dependabot[bot]