resolves #1970 [Test Toolkit] fix atrium deprecations (#1971)

Author: Fabilin

bot/test-base/pom.xml

@@ -77,7 +77,7 @@
         </dependency>
         <dependency>
             <groupId>ch.tutteli.atrium</groupId>
-            <artifactId>atrium-cc-en_GB-robstoll</artifactId>
+            <artifactId>atrium-fluent-jvm</artifactId>
             <version>${atrium}</version>
             <scope>compile</scope>
         </dependency>