Update dependency commons-io:commons-io to v2.21.0 (#112)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

build.gradle

@@ -191,7 +191,7 @@ dependencies {
   implementation group: 'org.springframework.security', name: 'spring-security-oauth2-core', version: springSecurity
   implementation group: 'org.springframework.security', name: 'spring-security-config', version: springSecurity
 
-  implementation group: 'commons-io', name: 'commons-io', version: '2.20.0'
+  implementation group: 'commons-io', name: 'commons-io', version: '2.21.0'
 
   implementation group: 'ch.qos.logback', name: 'logback-classic', version: '1.5.32'
   implementation group: 'ch.qos.logback', name: 'logback-core', version: '1.5.32'