Bump ant from 1.10.9 to 1.10.11 in /tools/cldr/cldr-to-icu

Bumps ant from 1.10.9 to 1.10.11.

---
updated-dependencies:
- dependency-name: org.apache.ant:ant
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/tools/cldr/cldr-to-icu/pom.xml b/tools/cldr/cldr-to-icu/pom.xml
index 29b5abb..e0931a8 100644
--- a/tools/cldr/cldr-to-icu/pom.xml
+++ b/tools/cldr/cldr-to-icu/pom.xml
@@ -101,7 +101,7 @@
         <dependency>
             <groupId>org.apache.ant</groupId>
             <artifactId>ant</artifactId>
-            <version>1.10.9</version>
+            <version>1.10.11</version>
         </dependency>
 
         <!-- Testing only dependencies. -->