Bump version for beta 4

Author: m4gr3d

ServiceApp/build.gradle

@@ -40,7 +40,7 @@ dependencies {
 def versionMajor = 1
 def versionMinor = 5
 def versionPatch = 3
-def versionBuild = 3 //bump for dogfood builds, public betas, etc.
+def versionBuild = 4 //bump for dogfood builds, public betas, etc.
 def versionPrefix = "3DR Services v"
 
 //Log levels values