Use the sdk instead of the api to determine the core version

[breedx-splk]

Not entirely sure when this broke/change, but the last release templated the instrumentation version just fine, but failed to populate the java core version.

After some investigation into the gradle deps, I settled on this change here.

$ ./gradlew --console=plain android-agent:dependencies | \
> grep 'io.opentelemetry:opentelemetry-api ' | \
> sed -e "s/.* -> //" | \
> sed -e "s/ .*//" | sort | head -1
<nothing printed>

$ ./gradlew --console=plain android-agent:dependencies | \
> grep 'io.opentelemetry:opentelemetry-sdk ' | \
> sed -e "s/.* -> //" | \
> sed -e "s/ .*//" | sort | head -1
1.61.0

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.05%. Comparing base (5dd681d) to head (41614ae).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1699   +/-   ##
=======================================
  Coverage   62.05%   62.05%           
=======================================
  Files         159      159           
  Lines        3500     3500           
  Branches      347      347           
=======================================
  Hits         2172     2172           
  Misses       1232     1232           
  Partials       96       96           

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