Update from JUnit 4.11 to 4.12.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1653892 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

pom.xml

@@ -211,7 +211,7 @@ limitations under the License.
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.11</version>
+      <version>4.12</version>
       <scope>test</scope>
     </dependency>
     <dependency>