Remove manual changing: true setting from build.gradle

Gradle will automatically detect dependencies as changing if their
version number ends with "-SNAPSHOT", so setting it manually is
redundant in that case.

build.gradle

@@ -38,7 +38,7 @@ configurations.all {
 }
 
 dependencies {
-	compile(group: "de.hhu.stups", name: "de.prob2.kernel", version: "4.0.0-SNAPSHOT", changing: true)
+	compile(group: "de.hhu.stups", name: "de.prob2.kernel", version: "4.0.0-SNAPSHOT")
 	compile(group: "io.github.spencerpark", name: "jupyter-jvm-basekernel", version: "2.2.3")
 	compile(group: "org.jetbrains", name: "annotations", version: "17.0.0")
 	compile(group: "se.sawano.java", name: "alphanumeric-comparator", version: "1.4.1")