chore(deps): bump com.h2database:h2 in /sample-jpa

Bumps [com.h2database:h2](https://github.com/h2database/h2database) from 2.2.224 to 2.3.230.
- [Release notes](https://github.com/h2database/h2database/releases)
- [Commits](h2database/h2database@version-2.2.224...version-2.3.230)

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

Signed-off-by: dependabot[bot] <[email protected]>

sample-jpa/build.gradle

@@ -11,7 +11,7 @@ sourceCompatibility = 1.8
 
 dependencies {
     implementation 'org.datanucleus:datanucleus-accessplatform-jpa-rdbms:6.0.5'
-    implementation 'com.h2database:h2:2.2.224'
+    implementation 'com.h2database:h2:2.3.230'
     testImplementation "org.junit.jupiter:junit-jupiter-api:5.10.0"
     testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:5.10.0"
 }