Bump kotlin-stdlib in /bundles/org.openhab.voice.watsonstt (#12979)

Bump kotlin-stdlib in /bundles/org.openhab.voice.watsonstt (#12979)

Bumps [kotlin-stdlib](https://github.com/JetBrains/kotlin) from 1.4.10 to 1.6.0.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.6.0/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/compare/v1.4.10...v1.6.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib
  dependency-type: direct:production
...

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