Update room_version to v2.6.0-beta01

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
androidx.room:room-paging (source)	2.6.0-alpha03 -> 2.6.0-beta01
androidx.room:room-compiler (source)	2.6.0-alpha03 -> 2.6.0-beta01

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