Please unblock package osgi-core

[ Reason ]
The LoggerFactory and LogEntry interface definitions where added to
osgi-core in version 8.0.0 duplication those in osgi-compendium.
osgi-compendium carries a Debian patch to adopt the APIs to be backward
compatible that was missing from osgi-core resulting in src:bnd FTBFS
(#1026606). 8.0.0-2 copies this patch so both packages provide the same
API.

[ Impact ]
src:bnd can not be build without this patch.

[ Tests ]
I did a test rebuild of src:bnd to make sure it compiles again:
https://tests.reproducible-builds.org/debian/rb-pkg/bnd.html

[ Risks ]
Given that the patch is already in osgi-compendium since 2020 and it
only provides default implementations for the added API methods I don't
see a risk.

Alternative solutions I looked into:

- Adopting src:bnd to implement the new API. I tried this but the diff
  was rather large with no added value. Also I assume there are other
  packages depending on the old API.

- removing LoggerFactory and LogEntry from osgi-core again which would
  result in a diff to the upstream source and probably other packages
  failing.

[ Checklist ]
  [X] all changes are documented in the d/changelog
  [X] I reviewed all changes and I approve them
  [X] attach debdiff against the package in testing

unblock osgi-core/8.0.0-2

Unblocked.