Bump com.github.johnrengelman.shadow from 5.2.0 to 8.1.1

Bumps com.github.johnrengelman.shadow from 5.2.0 to 8.1.1.

---
updated-dependencies:
- dependency-name: com.github.johnrengelman.shadow
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

settings.gradle.kts

@@ -42,7 +42,7 @@ pluginManagement {
     val kotlin_version: String by settings
     plugins {
         id("org.jetbrains.kotlin.jvm") version kotlin_version
-        id("com.github.johnrengelman.shadow") version "5.2.0"
+        id("com.github.johnrengelman.shadow") version "8.1.1"
         id("com.gradle.plugin-publish") version "0.20.0"
     }
 }