Version 3.3.28

Promote version 3.3.28-dev to 3.3.28.

Release branch for Android Studio 2021.3.1 (Dolphin) / AGP 7.3.

Change-Id: I0b3be8ce49553aef198bb4f79aaeb03049376b96
diff --git a/src/main/java/com/android/tools/r8/Version.java b/src/main/java/com/android/tools/r8/Version.java
index 7f4b723..5045f1b 100644
--- a/src/main/java/com/android/tools/r8/Version.java
+++ b/src/main/java/com/android/tools/r8/Version.java
@@ -11,7 +11,7 @@
 
   // 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 = "3.3.28-dev";
+  public static final String LABEL = "3.3.28";
 
   private Version() {
   }