Bump @opentelemetry/core and applicationinsights

Bumps [@opentelemetry/core](https://github.com/open-telemetry/opentelemetry-js) to 2.8.0 and updates ancestor dependency [applicationinsights](https://github.com/microsoft/ApplicationInsights-node.js). These dependencies need to be updated together.


Updates `@opentelemetry/core` from 2.0.1 to 2.8.0
- [Release notes](https://github.com/open-telemetry/opentelemetry-js/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-js/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-js@v2.0.1...v2.8.0)

Updates `applicationinsights` from 2.9.8 to 3.15.0
- [Release notes](https://github.com/microsoft/ApplicationInsights-node.js/releases)
- [Changelog](https://github.com/microsoft/ApplicationInsights-node.js/blob/main/CHANGELOG.md)
- [Commits](https://github.com/microsoft/ApplicationInsights-node.js/commits/3.15.0)

---
updated-dependencies:
- dependency-name: "@opentelemetry/core"
  dependency-version: 2.8.0
  dependency-type: indirect
- dependency-name: applicationinsights
  dependency-version: 3.15.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]