Upgrade to Boot 2.7.1

Author: Dave Syer

pom.xml

@@ -8,7 +8,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>2.7.0</version>
+    <version>2.7.1</version>
   </parent>
   <name>petclinic</name>