Update dependency commons-io:commons-io to v2.21.0

Author: renovate[bot]

pom.xml

@@ -154,7 +154,7 @@
       <dependency>
         <groupId>commons-io</groupId>
         <artifactId>commons-io</artifactId>
-        <version>2.20.0</version>
+        <version>2.21.0</version>
       </dependency>
       <dependency>
         <groupId>org.sonarsource.sslr</groupId>