Version 1.21.0-dev.10.0

Merge 6e84b56256b8169fe5688a8220af8df59020b765 into dev
diff --git a/tools/VERSION b/tools/VERSION
index ff9f90a..4af9fe7 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -24,9 +24,9 @@
 #  * Making cherry-picks to stable channel
 #     - increase PATCH by 1
 #
-CHANNEL be
+CHANNEL dev
 MAJOR 1
 MINOR 21
 PATCH 0
-PRERELEASE 0
+PRERELEASE 10
 PRERELEASE_PATCH 0