Use constructor injection and MockitoBean

Replaces field injection with @Autowired and the deprecated @MockBean

src/main/java/de/ozgcloud/eingang/semantik/enginebased/afm/intelliform/JsonService.java

@@ -26,23 +26,22 @@ package de.ozgcloud.eingang.semantik.enginebased.afm.intelliform;
 import java.util.List;
 import java.util.Map;
 
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Component;
-
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
 
 import de.ozgcloud.common.errorhandling.TechnicalException;
 
 @Component
+@RequiredArgsConstructor
 class JsonService {
 
 	static final TypeReference<List<Map<String, Object>>> VALUE_TYPE_REF = new TypeReference<List<Map<String, Object>>>() {
 	};
 
-	@Autowired
-	private ObjectMapper objectMapper;
+	private final ObjectMapper objectMapper;
 
 	public List<Map<String, Object>> readAsListMap(String json) {
 		return readValueSafety(json, VALUE_TYPE_REF);