Bump sentry.version from 6.29.0 to 6.30.0 in /backend

Bumps `sentry.version` from 6.29.0 to 6.30.0.

Updates `io.sentry:sentry` from 6.29.0 to 6.30.0
- [Release notes](https://github.com/getsentry/sentry-java/releases)
- [Changelog](https://github.com/getsentry/sentry-java/blob/main/CHANGELOG.md)
- [Commits](getsentry/sentry-java@6.29.0...6.30.0)

Updates `io.sentry:sentry-log4j2` from 6.29.0 to 6.30.0
- [Release notes](https://github.com/getsentry/sentry-java/releases)
- [Changelog](https://github.com/getsentry/sentry-java/blob/main/CHANGELOG.md)
- [Commits](getsentry/sentry-java@6.29.0...6.30.0)

---
updated-dependencies:
- dependency-name: io.sentry:sentry
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.sentry:sentry-log4j2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

backend/pom.xml

@@ -20,7 +20,7 @@
         <kotlin.version>1.9.10</kotlin.version>
         <testcontainers.version>1.19.0</testcontainers.version>
         <ktor.version>2.3.3</ktor.version>
-        <sentry.version>6.29.0</sentry.version>
+        <sentry.version>6.30.0</sentry.version>
         <commit.hash>COMMIT_TO_CHANGE</commit.hash>
         <main.class>fr.gouv.cnsp.monitorfish.MonitorFishApplicationKt</main.class>
     </properties>