deps: update dependency net.bytebuddy:byte-buddy to v1.18.4 (#4244)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Adoption](https://docs.renovatebot.com/merge-confidence/) | [Passing](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|---|---|
| [net.bytebuddy:byte-buddy](https://bytebuddy.net) | `1.18.1` → `1.18.4` | ![age](https://developer.mend.io/api/mc/badges/age/maven/net.bytebuddy:byte-buddy/1.18.4?slim=true) | ![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/net.bytebuddy:byte-buddy/1.18.4?slim=true) | ![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/net.bytebuddy:byte-buddy/1.18.1/1.18.4?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/net.bytebuddy:byte-buddy/1.18.1/1.18.4?slim=true) |

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Author: renovate-bot

google-cloud-spanner/pom.xml

@@ -404,7 +404,7 @@
     <dependency>
       <groupId>net.bytebuddy</groupId>
       <artifactId>byte-buddy</artifactId>
-      <version>1.18.1</version>
+      <version>1.18.4</version>
       <scope>test</scope>
     </dependency>
     <dependency>