Explicitly add benchmark bOS dependency to anchor bOS task
Explicitly add benchmark bOS dependency to anchor bOS task

Test: ./gradlew bOS using gradle 7.0 no longer warns about missing
      dependency
Change-Id: I4b218b55c605617ef43963fee54f96f40b60554a

AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx