try to fix ant build

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1891588 13f79535-47bb-0310-9956-ffa450edef68

.github/workflows/test-ant.yml

@@ -35,9 +35,9 @@ jobs:
       - name: Set up Ant
         id: setup-ant
         run: |
-          wget https://www.apache.org/dist/ant/binaries/apache-ant-1.10.9-bin.tar.gz
-          tar --exclude=apache-ant-1.10.9/manual -xzvf apache-ant-1.10.9-bin.tar.gz
-          ANT_HOME=`pwd`/apache-ant-1.10.9 apache-ant-1.10.9/bin/ant -version
+          wget https://www.apache.org/dist/ant/binaries/apache-ant-1.10.11-bin.tar.gz
+          tar --exclude=apache-ant-1.10.9/manual -xzvf apache-ant-1.10.11-bin.tar.gz
+          ANT_HOME=`pwd`/apache-ant-1.10.9 apache-ant-1.10.11/bin/ant -version
 
       - name: Cache downloaded third-party libraries
         uses: actions/cache@v2.1.3