Bump c3p0

Bumps [c3p0](https://github.com/swaldman/c3p0) from 0.9.5.3 to 0.9.5.4.
- [Release notes](https://github.com/swaldman/c3p0/releases)
- [Commits](swaldman/c3p0@c3p0-0.9.5.3...c3p0-0.9.5.4)

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

Author: dependabot[bot]

07-spring-security-5/bonus-code-spring-security-user-registration/pom.xml

@@ -59,7 +59,7 @@
 		<dependency>
 			<groupId>com.mchange</groupId>
 			<artifactId>c3p0</artifactId>
-			<version>0.9.5.3</version>
+			<version>0.9.5.4</version>
 		</dependency>