Update patch version for release - new version is 1.2.24-dev

Change-Id: I92b9fc42ae67f170062c61f1b38aa43b16fcc8cc
diff --git a/src/main/java/com/android/tools/r8/Version.java b/src/main/java/com/android/tools/r8/Version.java
index 1783f30..c965c46 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 = "1.2.23-dev";
+  public static final String LABEL = "1.2.24-dev";
 
   private Version() {
   }