Bump c3p0 in /tests/examples/JDBC/connectionPools

Bumps [c3p0](https://github.com/swaldman/c3p0) from 0.9.5.2 to 0.9.5.4.
- [Release notes](https://github.com/swaldman/c3p0/releases)
- [Commits](https://github.com/swaldman/c3p0/compare/c3p0-0.9.5.2...c3p0-0.9.5.4)
Signed-off-by: Ndependabot[bot] <support@github.com>

tests/examples/JDBC/connectionPools/pom.xml

@@ -42,7 +42,7 @@
         <dependency>
             <groupId>com.mchange</groupId>
             <artifactId>c3p0</artifactId>
-            <version>0.9.5.2</version>
+            <version>0.9.5.4</version>
         </dependency>
 
         <!-- log4j -->