deps(deps): bump org.junit:junit-bom from 5.14.4 to 6.0.3 in /benchmarks

Bumps [org.junit:junit-bom](https://github.com/junit-team/junit-framework) from 5.14.4 to 6.0.3.
- [Release notes](https://github.com/junit-team/junit-framework/releases)
- [Commits](junit-team/junit-framework@r5.14.4...r6.0.3)

---
updated-dependencies:
- dependency-name: org.junit:junit-bom
  dependency-version: 6.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

benchmarks/pom.xml

@@ -19,7 +19,7 @@
         <graphcompose.version>1.6.1</graphcompose.version>
         <maven.compiler.release>17</maven.compiler.release>
 
-        <junit.bom.version>5.14.4</junit.bom.version>
+        <junit.bom.version>6.0.3</junit.bom.version>
         <assertj.version>3.27.7</assertj.version>
         <logback.version>1.5.32</logback.version>