Bump com.mchange:c3p0 from 0.12.0 to 0.13.0 (closes #263)

Bumps [com.mchange:c3p0](https://github.com/swaldman/c3p0) from 0.12.0 to 0.13.0.
- [Changelog](https://github.com/swaldman/c3p0/blob/0.13.x/CHANGELOG)
- [Commits](https://github.com/swaldman/c3p0/commits)

---
updated-dependencies:
- dependency-name: com.mchange:c3p0
  dependency-version: 0.13.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Change-Id: I5abbb6748cda84ee0ad21f3ef8fb0e72c69d0b42
diff --git a/pom.xml b/pom.xml
index 4f90138..c4e852f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -129,7 +129,7 @@
     <dependency>
       <groupId>com.mchange</groupId>
       <artifactId>c3p0</artifactId>
-      <version>0.12.0</version>
+      <version>0.13.0</version>
     </dependency>
     
     <!-- Lucene core dependency -->