Legger til dependency for å teste coroutines (#857)

Author: mbolstad

dusseldorf-test-support/pom.xml

@@ -22,6 +22,11 @@
             <artifactId>wiremock</artifactId>
             <version>${wiremock.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlinx</groupId>
+            <artifactId>kotlinx-coroutines-test</artifactId>
+            <version>${kotlinx.coroutines.version}</version>
+        </dependency>
     </dependencies>
 
     <build>