Revert "increment version number"

This reverts commit b8ed0cd75425d0d6b077afc507311277fe74cda2.
diff --git a/build.gradle b/build.gradle
index 77963b6..a21747f 100755
--- a/build.gradle
+++ b/build.gradle
@@ -33,7 +33,7 @@
 
 def tapestryVersion() {
 
-    def major = "5.4.3"
+    def major = "5.4.2"
     def minor = ""
 
     // When building on the CI server, make sure -SNAPSHOT is appended, as it is a nightly build.