Update slices to RV 1.2.0-beta01
Update slices to RV 1.2.0-beta01

The newer RV contains a performance improvement that
we want to leverage.  This should undo the
perf regression seen in b/176996333.

Existing users of slices will not see any regression
actually because the existing slices artifacts
use this older version of RV.

Fixes: 176996333
Test: gw bOS
Change-Id: I8144097a6e3547e7a54903acaa92cfeaaf9a1a26

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