Properties must be changeable with setters

module-server/src/main/kotlin/de/twomartens/wahlrecht/property/ServiceProperties.kt

@@ -9,4 +9,4 @@ import java.time.ZoneId
 @RefreshScope
 @ConfigurationProperties(prefix = "de.twomartens.wahlrecht")
 @Schema(description = "Properties, to configure this Application")
-data class ServiceProperties @ConstructorBinding constructor(val defaultTimeZone: ZoneId, val greeting: String)
+data class ServiceProperties @ConstructorBinding constructor(var defaultTimeZone: ZoneId, var greeting: String)

module-server/src/main/resources/application-prod.yaml

@@ -1,8 +1,7 @@
 spring:
   config:
     import:
-      - "classpath:config/wahlrecht.yaml"
-      - "optional:configserver:http://configserver:8888/config"
+      - "configserver:http://configserver:8888/config"
   kafka:
     bootstrap-servers:
       - kafka:9092

module-server/src/main/resources/config/wahlrecht-prod.yaml

@@ -1,2 +1,2 @@
 de.twomartens.wahlrecht:
-  greeting: "Moin %s, you are prod"
+  greeting: "Moin %s, you are stage"