Set min_sdk_version to apex_inherit

Switched min_sdk_version from 29(hard-coded) to "apex_inherit".
From the build system perspective, nothing changes.

This change is to sync with internal code because it's been changed
while cherry-picking.

Bug: 145796956
Test: m
Change-Id: Ic71a1610519f56a86196aecaab0878d0dbea6a1a
1 file changed