Bump ant.version from 1.10.7 to 1.10.8

Bumps `ant.version` from 1.10.7 to 1.10.8.

Updates `ant` from 1.10.7 to 1.10.8

Updates `ant-junit` from 1.10.7 to 1.10.8

Updates `ant-junitlauncher` from 1.10.7 to 1.10.8

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -33,7 +33,7 @@
         <jmri.shutdownmanager>jmri.util.MockShutDownManager</jmri.shutdownmanager>
         <!-- don't load JInput during CI tests -->
         <jinput.useDefaultPlugin>false</jinput.useDefaultPlugin>
-        <ant.version>1.10.7</ant.version>
+        <ant.version>1.10.8</ant.version>
         <junit5.version>5.6.0</junit5.version>
         <junit.platform.version>1.6.0</junit.platform.version>
         <ant.jvm.args></ant.jvm.args>