fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-COMMONSIO-1277109

pom.xml

@@ -486,7 +486,7 @@
     <maven-surefire-plugin.version>3.0.0-M3</maven-surefire-plugin.version>
     <maven-surefire-report-plugin.version>3.0.0-M3</maven-surefire-report-plugin.version>
     <maven-toolchains-plugin.version>1.1</maven-toolchains-plugin.version>
-    <maven.version>3.8.2</maven.version>
+    <maven.version>3.9.7</maven.version>
     <nexus-staging-maven-plugin.version>1.6.8</nexus-staging-maven-plugin.version>
     <!-- Properties for maven-compiler-plugin -->
     <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>