fix: add python3-importlib-metadata to python3-opentelemetry-api Depends

opentelemetry.util._importlib_metadata unconditionally imports
importlib_metadata but the package did not declare this dependency,
causing ModuleNotFoundError on systems without it installed.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Vitexus

debian/control

@@ -20,6 +20,7 @@ Multi-Arch: foreign
 Depends:
  ${misc:Depends},
  ${python3:Depends},
+ python3-importlib-metadata,
 Description: OpenTelemetry Python API
  OpenTelemetry is a collection of tools, APIs, and SDKs used to instrument,
  generate, collect, and export telemetry data (metrics, logs, and traces).