Merge pull request #2100 from kubernetes-client/dependabot/maven/spring.boot.version-2.6.3

Bump spring.boot.version from 2.6.2 to 2.6.3

Author: k8s-ci-robot

pom.xml

@@ -60,7 +60,7 @@
     <apache.commons.compress>1.21</apache.commons.compress>
     <apache.commons.io>2.11.0</apache.commons.io>
     <common.codec.version>1.15</common.codec.version>
-    <spring.boot.version>2.6.2</spring.boot.version>
+    <spring.boot.version>2.6.3</spring.boot.version>
     <spring.version>5.3.15</spring.version>
     <prometheus.client.version>0.14.1</prometheus.client.version>