version: begin v1.16.3 release cycle (#32345)

Author: rjl493456442

version/version.go

@@ -17,8 +17,8 @@
 package version
 
 const (
-	Major = 1        // Major version component of the current release
-	Minor = 16       // Minor version component of the current release
-	Patch = 2        // Patch version component of the current release
-	Meta  = "stable" // Version metadata to append to the version string
+	Major = 1          // Major version component of the current release
+	Minor = 16         // Minor version component of the current release
+	Patch = 3          // Patch version component of the current release
+	Meta  = "unstable" // Version metadata to append to the version string
 )