Version 3.1.51

Bug: 211113454
Change-Id: Id862d798a08ec562b5e835d2eaafba213780de61

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 ac64eb4..fdc5eec 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 = "3.1.50";
+  public static final String LABEL = "3.1.51";
 
   private Version() {
   }