Version 1.12.0-dev.5.9

Cherry-pick 1d537028f7cbe026fb682804fb13c72aa3261ae5 to dev
Cherry-pick 6e0b2418c7024406f603c2c775d320484355a449 to dev
Cherry-pick b569deac480aeced9fccbb802d47cfdcd8691894 to dev
Cherry-pick 664742f0162a13e0d60c65de0a713df8acd7d8e9 to dev
Cherry-pick f07cec063c4ac380119a628f25573db9a21d8634 to dev
Cherry-pick d0b03eebbd63261e7beb8413aa9ce9dfa2a862cc to dev
Cherry-pick 3aa62d03fcbffc2f2a77f05d2c8e975b75a56d76 to dev
Cherry-pick 74e02785b0e534e469668ce2cabced7d26ec55b1 to dev
Cherry-pick 028c9952959be3b1f275c3cfbe805ab80c49f07a to dev
diff --git a/tools/VERSION b/tools/VERSION
index 9524960..79b12b13 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 12
 PATCH 0
 PRERELEASE 5
-PRERELEASE_PATCH 8
+PRERELEASE_PATCH 9