Merge pull request #2282 from kubernetes-client/dependabot/maven/org.springframework-spring-test-5.3.21

Bump spring-test from 5.3.20 to 5.3.21

Author: k8s-ci-robot

pom.xml

@@ -61,7 +61,7 @@
     <apache.commons.io>2.11.0</apache.commons.io>
     <common.codec.version>1.15</common.codec.version>
     <spring.boot.version>2.7.0</spring.boot.version>
-    <spring.version>5.3.20</spring.version>
+    <spring.version>5.3.21</spring.version>
     <prometheus.client.version>0.15.0</prometheus.client.version>
 
     <e2e.skip>true</e2e.skip>