Test failure: `com.linecorp.centraldogma.server.VariableTemplateCrudTest.watcherShouldBeNotifiedWhenProjectVariableIsUpdated()`

[minwoox]

java.lang.NullPointerException: Cannot invoke "com.linecorp.centraldogma.common.Entry.content()" because "entry" is null
	at com.linecorp.centraldogma.server.VariableTemplateCrudTest.watcherShouldBeNotifiedWhenProjectVariableIsUpdated(VariableTemplateCrudTest.java:1477)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)