Bump com.gradleup.shadow from 9.0.0-beta7 to 9.0.0-beta8 in /Agent

Bumps [com.gradleup.shadow](https://github.com/GradleUp/shadow) from 9.0.0-beta7 to 9.0.0-beta8.
- [Release notes](https://github.com/GradleUp/shadow/releases)
- [Commits](GradleUp/shadow@9.0.0-beta7...9.0.0-beta8)

---
updated-dependencies:
- dependency-name: com.gradleup.shadow
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Agent/build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id("com.gradleup.shadow") version "9.0.0-beta7"
+    id("com.gradleup.shadow") version "9.0.0-beta8"
 }
 
 base {