Bump Android Gradle version files to  3.1.2

Bug:77865364
Test: NA
Change-Id: I7c19e3d5bfd1824cbd7ae09e5edfa80ad5665e06
diff --git a/base/version.properties b/base/version.properties
index 6117044..1fa6cf9 100644
--- a/base/version.properties
+++ b/base/version.properties
@@ -3,9 +3,9 @@
 # This file is read by gradle build scripts, but also packaged with builder and
 # builder-model as a resource, for Version classes to read.
 
-baseVersion = 26.1.1
-buildVersion = 3.1.1
-experimentalVersion = 0.12.1
+baseVersion = 26.1.2
+buildVersion = 3.1.2
+experimentalVersion = 0.12.2
 experimentalGradleVersion = 3.2
 # This counter should be incremented every time the api is changed in not backward-compatible way,
 # i.e. it should be incremented from N to N+1 only when the api is changed in a way that existing