Bump com.h2database:h2 from 2.2.224 to 2.4.240

Bumps [com.h2database:h2](https://github.com/h2database/h2database) from 2.2.224 to 2.4.240.
- [Release notes](https://github.com/h2database/h2database/releases)
- [Commits](h2database/h2database@version-2.2.224...version-2.4.240)

---
updated-dependencies:
- dependency-name: com.h2database:h2
  dependency-version: 2.4.240
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

rxjava2-jdbc/pom.xml

@@ -63,7 +63,7 @@
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
-            <version>2.2.224</version>
+            <version>2.4.240</version>
             <scope>test</scope>
         </dependency>