Bump io.helidon:helidon-bom from 4.0.7 to 4.0.8

Bumps [io.helidon:helidon-bom](https://github.com/oracle/helidon) from 4.0.7 to 4.0.8.
- [Release notes](https://github.com/oracle/helidon/releases)
- [Changelog](https://github.com/helidon-io/helidon/blob/4.0.8/CHANGELOG.md)
- [Commits](helidon-io/helidon@4.0.7...4.0.8)

---
updated-dependencies:
- dependency-name: io.helidon:helidon-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -100,7 +100,7 @@
     <com.github.davidmoten.subethasmtp.version>7.0.2</com.github.davidmoten.subethasmtp.version>
     <com.helger.ph-css.version>7.0.2</com.helger.ph-css.version>
     <com.squareup.okio.version>3.9.0</com.squareup.okio.version>
-    <io.helidon.version>4.0.7</io.helidon.version>
+    <io.helidon.version>4.0.8</io.helidon.version>
     <io.opentelemetry.api.logs.version>1.26.0-alpha</io.opentelemetry.api.logs.version>
     <io.opentelemetry.sdk.logs.version>1.37.0</io.opentelemetry.sdk.logs.version>
     <io.opentelemetry.semconv.version>1.30.1-alpha</io.opentelemetry.semconv.version>