Set sdk_version for error_prone_core am: 91a4314704 am: 7647128ca3 am: cd2c4fb612 am: 31d82635bc

Original change: https://android-review.googlesource.com/c/platform/external/error_prone/+/2521118

Change-Id: I459ec072e18bb6aee08a52c7d8f6660503d90376
Signed-off-by: Automerger Merge Worker <[email protected]>