chore(deps): bump com.google.guava:guava in /hiero-dependency-versions

Bumps [com.google.guava:guava](https://github.com/google/guava) from 33.4.7-android to 33.4.8-android.
- [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-android
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

hiero-dependency-versions/build.gradle.kts

@@ -40,7 +40,7 @@ dependencies.constraints {
 
     // Testing
     api("com.fasterxml.jackson.core:jackson-core:2.18.3") { because("com.fasterxml.jackson.core") }
-    api("com.google.guava:guava:33.4.7-android") { because("com.google.common") }
+    api("com.google.guava:guava:33.4.8-android") { because("com.google.common") }
     api("io.github.cdimascio:java-dotenv:5.3.1") { because("java.dotenv") }
     api("io.github.json-snapshot:json-snapshot:1.0.17") { because("json.snapshot") }
     api("org.apache.commons:commons-lang3:3.17.0") { because("org.apache.commons.lang3") }