Version 2.1.81

Bug: 170716961
Change-Id: Ie0cb5590275d3b038ec620723723f2f408e26acf

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 0f54009..3c1b124 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 = "2.1.80";
+  public static final String LABEL = "2.1.81";
 
   private Version() {
   }