fix(deps): update dependency com.github.johnrengelman.shadow:com.github.johnrengelman.shadow.gradle.plugin to v8

Author: renovate[bot]

buildSrc/src/main/kotlin/Dependencies.kt

@@ -15,7 +15,7 @@ object PluginLibs {
 
         const val jooq = "3.14.13"
         const val docker = "8.1.0"
-        const val shadow = "7.1.2"
+        const val shadow = "8.1.1"
         const val testcontainers = "1.19.7"
         const val yaml = "2.2"
     }