Version 8.6.21

Change-Id: I024f33f1edf77e112fbdfe909fde0fb99aca960a
diff --git a/src/main/java/com/android/tools/r8/Version.java b/src/main/java/com/android/tools/r8/Version.java
index 949a1dc..e1c0dae 100644
--- a/src/main/java/com/android/tools/r8/Version.java
+++ b/src/main/java/com/android/tools/r8/Version.java
@@ -13,7 +13,7 @@
 
   // This field is accessed from release scripts using simple pattern matching.
   // Therefore, changing this field could break our release scripts.
-  public static final String LABEL = "8.6.20";
+  public static final String LABEL = "$VERSION";
 
   private Version() {
   }