Update plugin version to 1.0-rc2

Change-Id: I957fccb27975768f6c4e2c8e0d98ea0cef585c47
(cherry picked from commit 9d8c50ca55c475c8cbcd88a23c1ce0aa60c57b9b)
diff --git a/base/version.gradle b/base/version.gradle
index 9c9a53a..46b11bd 100644
--- a/base/version.gradle
+++ b/base/version.gradle
@@ -1,2 +1,2 @@
-project.ext.baseVersion = '23.2.5'
-project.ext.buildVersion = '1.0.0-rc1'
+project.ext.baseVersion = '23.2.6'
+project.ext.buildVersion = '1.0.0-rc2'