Build icing against the "current" SDK for mainline compatibility. am: ac858b3f91 am: cc27da1e76 am: 70f26ac5ad am: 9408b12e2c

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/icing/+/14804613

Change-Id: I86eeaf8358486cd6064ca9831bf66020d5959fa7