chore(deps): bump com.gradleup.shadow:shadow-gradle-plugin

Bumps [com.gradleup.shadow:shadow-gradle-plugin](https://github.com/GradleUp/shadow) from 9.0.0-beta7 to 9.0.0-beta16.
- [Release notes](https://github.com/GradleUp/shadow/releases)
- [Commits](GradleUp/shadow@9.0.0-beta7...9.0.0-beta16)

---
updated-dependencies:
- dependency-name: com.gradleup.shadow:shadow-gradle-plugin
  dependency-version: 9.0.0-beta16
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -59,7 +59,7 @@ ktor = "3.1.1"
 
 # Plugin versions
 maven-repo-auth = "3.0.4"
-shadow-gradle-plugin = "9.0.0-beta7"
+shadow-gradle-plugin = "9.0.0-beta16"
 ksp-gradle-plugin = "2.1.10-1.0.29"
 run-paper-gradle-plugin = "2.3.1"
 dokka = "2.0.0"