revert ant upgrade due to issues with ant-launcher-1.10.13.jar

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1906580 13f79535-47bb-0310-9956-ffa450edef68

poi-integration/build.gradle

@@ -39,7 +39,7 @@ sourceSets {
 }
 
 dependencies {
-    testImplementation 'org.apache.ant:ant:1.10.13'
+    testImplementation 'org.apache.ant:ant:1.10.12'
     testImplementation 'org.apache.commons:commons-collections4:4.4'
     testImplementation 'com.google.guava:guava:31.1-jre'