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/.gitignore b/.gitignore
index 7f22981..b24879a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 .settings/
 .vscode
 .factorypath
+.project
 
 # Target dirs in all projects
 **/target-ide/*