Bump custom_components/dahua_dist from 6522072 to 21a2732

Bumps [custom_components/dahua_dist](https://github.com/rroller/dahua) from `6522072` to `21a2732`.
- [Release notes](https://github.com/rroller/dahua/releases)
- [Commits](rroller/dahua@6522072...21a2732)

---
updated-dependencies:
- dependency-name: custom_components/dahua_dist
  dependency-type: direct:production
...

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