Bump dbunit from 2.7.2 to 2.7.3 (#167)

Bumps dbunit from 2.7.2 to 2.7.3.

---
updated-dependencies:
- dependency-name: org.dbunit:dbunit
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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pom.xml

@@ -443,7 +443,7 @@
     <dependency>
       <groupId>org.dbunit</groupId>
       <artifactId>dbunit</artifactId>
-      <version>2.7.2</version>
+      <version>2.7.3</version>
       <scope>test</scope>
     </dependency>