Add spring-boot-starter-validation dependency

Springboot starter version 2.3 no longer includes spring-boot-starter-validation

which now needs to be added as a separate dependency

Change-Id: I11b5dd40d96f3c1692bc23c75d508d5a39bcbbd7
Issue-ID: CCSDK-2633
Signed-off-by: Dan Timoney <dtimoney@att.com>
diff --git a/ms/sliboot/pom.xml b/ms/sliboot/pom.xml
index b0c1eac..3d8fa7b 100644
--- a/ms/sliboot/pom.xml
+++ b/ms/sliboot/pom.xml
@@ -51,6 +51,10 @@
             <artifactId>spring-boot-starter-log4j2</artifactId>
         </dependency>
         <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+        <dependency>
             <groupId>org.onap.aaf.cadi</groupId>
             <artifactId>aaf-cadi-shiro</artifactId>
             <version>${aaf-shiro-bundle.version}</version>