build(deps): bump io.github.goooler.shadow from 8.1.7 to 8.1.8

Bumps [io.github.goooler.shadow](https://github.com/Goooler/shadow) from 8.1.7 to 8.1.8.
- [Release notes](https://github.com/Goooler/shadow/releases)
- [Commits](Goooler/shadow@v8.1.7...v8.1.8)

---
updated-dependencies:
- dependency-name: io.github.goooler.shadow
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

build.gradle.kts

@@ -6,7 +6,7 @@ import kotlin.text.Charsets.UTF_8
 plugins {
     `java-library`
     `maven-publish`
-    id("io.github.goooler.shadow") version "8.1.7"
+    id("io.github.goooler.shadow") version "8.1.8"
     id("io.freefair.lombok") version "8.6"
     kotlin("jvm") version "1.8.0"
 }