Bump org.apache.sis.core:sis-metadata in /dev/dev-acs-amps-overlay

Bumps org.apache.sis.core:sis-metadata from 1.3 to 1.6.

---
updated-dependencies:
- dependency-name: org.apache.sis.core:sis-metadata
  dependency-version: '1.6'
  dependency-type: direct:production
...

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Author: dependabot[bot]