Version 1.16.0-dev.5.3

Cherry-pick b500f3c0089e133aae45857cbc08a65aeedd40f3 to dev
Update pub to 217fc8ae2bdee58ebf4b11a6fa3d49624d90c0c4
Cherry-pick bf9ab643cdb27e60497e5529beb059dcb090fbec to dev
diff --git a/tools/VERSION b/tools/VERSION
index 58909c0..cf826c5 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 16
 PATCH 0
 PRERELEASE 5
-PRERELEASE_PATCH 2
+PRERELEASE_PATCH 3