Bump @opentelemetry/core and @vscode/extension-telemetry

Removes [@opentelemetry/core](https://github.com/open-telemetry/opentelemetry-js). It's no longer used after updating ancestor dependency [@vscode/extension-telemetry](https://github.com/Microsoft/vscode-extension-telemetry). These dependencies need to be updated together.


Removes `@opentelemetry/core`

Updates `@vscode/extension-telemetry` from 0.8.5 to 1.5.2
- [Release notes](https://github.com/Microsoft/vscode-extension-telemetry/releases)
- [Commits](microsoft/vscode-extension-telemetry@v0.8.5...v1.5.2)

---
updated-dependencies:
- dependency-name: "@opentelemetry/core"
  dependency-version:
  dependency-type: indirect
- dependency-name: "@vscode/extension-telemetry"
  dependency-version: 1.5.2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]