refactor: simplify VersionTask

Author: qoomon

src/main/java/me/qoomon/gradle/gitversioning/VersionTask.java

@@ -5,7 +5,7 @@
 import org.gradle.api.tasks.TaskAction;
 
 public class VersionTask extends DefaultTask {
-    private final Provider<String> projectVersion = getProject().provider(() -> getProject().getVersion().toString());
+    private final Provider<Object> projectVersion = getProject().provider(() -> getProject().getVersion());
 
     @TaskAction
     void printProjectVersion() {