chore(deps-dev): bump freemarker from 2.3.30 to 2.3.31

Bumps freemarker from 2.3.30 to 2.3.31.

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -23,7 +23,7 @@
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <mybatis-plus.version>3.4.1</mybatis-plus.version>
-        <freemarker.version>2.3.30</freemarker.version>
+        <freemarker.version>2.3.31</freemarker.version>
     </properties>
 
     <dependencies>