Version 8.12.21

Bug: b/438933684
Change-Id: Ic843d7f3adaadb0b543325077a57b77d8305c72c

src/main/java/com/android/tools/r8/Version.java

diff --git a/src/main/java/com/android/tools/r8/Version.java b/src/main/java/com/android/tools/r8/Version.java
index d90ff3b..fde20c5 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 = "8.12.20";
+  public static final String LABEL = "8.12.21";
 
   private Version() {
   }