deps: update dependency com.google.guava:guava-bom to v33.4.0-jre (#3545)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.guava:guava-bom](https://redirect.github.com/google/guava)
([source](http://svn.sonatype.org/spice/trunk/oss/oss-parent-9)) |
`33.3.1-jre` -> `33.4.0-jre` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.guava:guava-bom/33.4.0-jre?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.guava:guava-bom/33.4.0-jre?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.guava:guava-bom/33.3.1-jre/33.4.0-jre?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.guava:guava-bom/33.3.1-jre/33.4.0-jre?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

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Co-authored-by: Min Zhu <[email protected]>

Author: renovate-bot

gapic-generator-java-pom-parent/pom.xml

@@ -30,7 +30,7 @@
     <google.auth.version>1.30.1</google.auth.version>
     <google.http-client.version>1.45.3</google.http-client.version>
     <gson.version>2.11.0</gson.version>
-    <guava.version>33.3.1-jre</guava.version>
+    <guava.version>33.4.0-jre</guava.version>
     <protobuf.version>3.25.5</protobuf.version>
     <opentelemetry.version>1.45.0</opentelemetry.version>
     <maven.compiler.release>8</maven.compiler.release>