Update Apache Commons Parent from 47 to 48.
diff --git a/pom.xml b/pom.xml
index 92f60ff..7094d97 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.commons</groupId>
     <artifactId>commons-parent</artifactId>
-    <version>47</version>
+    <version>48</version>
   </parent>
   <artifactId>commons-build-plugin</artifactId>
   <packaging>maven-plugin</packaging>