Update test dependencies.

- Update tests org.junit-pioneer:junit-pioneer 0.3.0 -> 0.5.6.
- Update tests org.junit.jupiter:junit-jupiter 5.5.2 -> 5.6.1.
- Update tests org.mockito:mockito-core 3.0.0 -> 3.3.3.

Author: garydgregory

pom.xml

@@ -233,19 +233,19 @@ file comparators, endian transformation classes, and much more.
     <dependency>
       <groupId>org.junit.jupiter</groupId>
       <artifactId>junit-jupiter</artifactId>
-      <version>5.5.2</version>
+      <version>5.6.1</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>org.junit-pioneer</groupId>
       <artifactId>junit-pioneer</artifactId>
-      <version>0.3.0</version>
+      <version>0.5.6</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-core</artifactId>
-      <version>3.0.0</version>
+      <version>3.3.3</version>
       <scope>test</scope>
     </dependency>
     <dependency>

src/changes/changes.xml

@@ -189,6 +189,15 @@ The <action> type attribute can be add,update,fix,remove.
       <action type="update" dev="ggregory" due-to="Gary Gregory">
          Update tests from Apache Commons Lang 3.9 to 3.10.
       </action>
+      <action type="update" dev="ggregory" due-to="Gary Gregory">
+         Update tests org.junit-pioneer:junit-pioneer 0.3.0 -> 0.5.6.
+      </action>
+      <action type="update" dev="ggregory" due-to="Gary Gregory">
+         Update tests org.junit.jupiter:junit-jupiter 5.5.2 -> 5.6.1.
+      </action>
+      <action type="update" dev="ggregory" due-to="Gary Gregory">
+         Update tests org.mockito:mockito-core 3.0.0 -> 3.3.3.
+      </action>
       <action issue="IO-648" dev="ggregory" type="add" due-to="Adam Retter, Alex Herbert, Gary Gregory">
          Refactor ByteArrayOutputStream into synchronized and unsynchronized versions #108.
       </action>