Update dependencies.

- Bump mockito-core from 3.5.13 to 3.5.15 #166.
- Bump spotbugs-maven-plugin from 4.1.3 to 4.1.4 #165.

Author: Gary Gregory

src/changes/changes.xml

@@ -86,13 +86,13 @@ The <action> type attribute can be add,update,fix,remove.
         Update junit-jupiter from 5.6.2 to 5.7.0 #153.
       </action>
       <action dev="ggregory" type="update" due-to="Dependabot">
-        Update mockito-core from 3.5.9 to 3.5.13 #152, #155, #157.
+        Update mockito-core from 3.5.9 to 3.5.15 #152, #155, #157, #166.
       </action>
       <action dev="ggregory" type="update" due-to="Gary Gregory">
         Update commons.jacoco.version 0.8.5 to 0.8.6 (Fixes Java 15 builds).
       </action>
       <action dev="ggregory" type="update" due-to="Dependabot">
-        Update spotbugs from 4.1.2 to 4.1.4 #158, #164.
+        Update spotbugs from 4.1.2 to 4.1.4 #158, #164, #165.
       </action>
       <action dev="ggregory" type="update" due-to="Dependabot">
         Bump spotbugs-maven-plugin from 4.0.4 to 4.1.3 #161.