Update patch version for release

New version is v1.1.8-dev

Change-Id: I8fa46ae88c1245a3dcff84a2eb0349043e589398

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 5d77ad3..fed4a00 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 = "v1.1.7-dev";
+  public static final String LABEL = "v1.1.8-dev";
 
   private Version() {
   }