deps: update dependency net.bytebuddy:byte-buddy-agent to v1.17.8 (googleapis#4155)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [net.bytebuddy:byte-buddy-agent](https://bytebuddy.net) | `1.17.7` -> `1.17.8` | [![age](https://developer.mend.io/api/mc/badges/age/maven/net.bytebuddy:byte-buddy-agent/1.17.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/net.bytebuddy:byte-buddy-agent/1.17.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/net.bytebuddy:byte-buddy-agent/1.17.7/1.17.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/net.bytebuddy:byte-buddy-agent/1.17.7/1.17.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate-bot

google-cloud-spanner/pom.xml

@@ -388,7 +388,7 @@
     <dependency>
       <groupId>net.bytebuddy</groupId>
       <artifactId>byte-buddy-agent</artifactId>
-      <version>1.17.7</version>
+      <version>1.17.8</version>
       <scope>test</scope>
     </dependency>