chore(dev): release 6.9.0

[release-please[bot]]

:robot: I have created a release beep boop

6.9.0 (2024-05-09)

Features

• generation: update request builders and models (b02e9e8)

Bug Fixes

• downgrade jakarta.annotation-api, bump java core and kiota libs for java 8 compatibility (8a03b30)

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[release-please[bot]]

:robot: Release is at https://github.com/microsoftgraph/msgraph-sdk-java/releases/tag/v6.9.0 :sunflower: