Bump ampel-ztf from 0.8.3a2 to 0.8.3a5

Bumps [ampel-ztf](https://github.com/AmpelProject/Ampel-ZTF) from 0.8.3a2 to 0.8.3a5.
- [Release notes](https://github.com/AmpelProject/Ampel-ZTF/releases)
- [Commits](AmpelAstro/Ampel-ZTF@v0.8.3-alpha.2...v0.8.3a5)

---
updated-dependencies:
- dependency-name: ampel-ztf
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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