[pom] Allow support for freemarker 2.3.33 as it has one class listed as java 16

Author: hazendaz

pom.xml

@@ -24,7 +24,7 @@
     <groupId>org.mybatis</groupId>
     <artifactId>mybatis-parent</artifactId>
     <version>44</version>
-    <relativePath/>
+    <relativePath />
   </parent>
 
   <groupId>org.mybatis.scripting</groupId>
@@ -91,7 +91,7 @@
     <dependency>
       <groupId>org.freemarker</groupId>
       <artifactId>freemarker</artifactId>
-      <version>2.3.32</version>
+      <version>2.3.33</version>
     </dependency>
     <dependency>
       <groupId>org.apache.commons</groupId>
@@ -114,4 +114,23 @@
     </dependency>
   </dependencies>
 
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <configuration>
+          <rules>
+            <enforceBytecodeVersion>
+              <excludes>
+                <!-- Allow specific java 16 code to be allowed at 'freemarker/core/_Java16Impl' -->
+                <exclude>org.freemarker:freemarker</exclude>
+              </excludes>
+            </enforceBytecodeVersion>
+          </rules>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+
 </project>