Update to use released London version of CCSDK dependencies

Upgrade to use released London version of CCSDK parent pom and
directed graphs

Issue-ID: CCSDK-3876
Signed-off-by: Dan Timoney <dtimoney@att.com>
Change-Id: I53e738250471ac9422d09d260e1fb22eaf5c98c9
diff --git a/pom.xml b/pom.xml
index adbf1a5..dde6823 100755
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.onap.ccsdk.parent</groupId>
         <artifactId>spring-boot-26-starter-parent</artifactId>
-        <version>2.5.3</version>
+        <version>2.5.4</version>
         <relativePath/>
     </parent>