Update version from 6.2.8 to 7.0.3

Author: arey

pom.xml

@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.springframework.samples</groupId>
     <artifactId>spring-framework-petclinic</artifactId>
-    <version>6.2.8</version>
+    <version>7.0.3</version>
 
     <name>Spring Framework Petclinic</name>
     <packaging>war</packaging>