Update tests from Apache Commons Lang 3.7 to 3.8.

Author: garydgregory

pom.xml

@@ -53,7 +53,7 @@ CSV files of various types.
     <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-lang3</artifactId>
-      <version>3.7</version>
+      <version>3.8</version>
       <scope>test</scope>
     </dependency>
     <dependency>