Bump com.google.guava:guava from 33.4.7-jre to 33.4.8-jre in /Plan (#4070)

Bumps [com.google.guava:guava](https://github.com/google/guava) from 33.4.7-jre to 33.4.8-jre.
- [Release notes](https://github.com/google/guava/releases)
- [Commits](https://github.com/google/guava/commits)

---
updated-dependencies:
- dependency-name: com.google.guava:guava
  dependency-version: 33.4.8-jre
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Plan/build.gradle

@@ -96,7 +96,7 @@ subprojects {
         testContainersVersion = "1.20.6"
         awaitilityVersion = "4.3.0"
         swaggerVersion = "2.2.30"
-        guavaVersion = "33.4.7-jre"
+        guavaVersion = "33.4.8-jre"
     }
 
     repositories {