Bump h2 from 1.3.168 to 2.2.220 in /snippets/bpmn-io-sample

Bumps [h2](https://github.com/h2database/h2database) from 1.3.168 to 2.2.220.
- [Release notes](https://github.com/h2database/h2database/releases)
- [Commits](https://github.com/h2database/h2database/commits/version-2.2.220)

---
updated-dependencies:
- dependency-name: com.h2database:h2
  dependency-type: direct:development
...

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

snippets/bpmn-io-sample/pom.xml

@@ -60,7 +60,7 @@
 			<!-- Needed for InMemoryH2Test -->
 			<groupId>com.h2database</groupId>
 			<artifactId>h2</artifactId>
-			<version>1.3.168</version>
+			<version>2.2.220</version>
 			<scope>test</scope>
 		</dependency>