Revert gradle/shadow update, for now

This reverts commit dc322cba0a and 27cd53ead8.

build-logic/src/main/kotlin/geyser.platform-conventions.gradle.kts

@@ -11,7 +11,7 @@ tasks {
                 "id" to "geyser",
                 "name" to "Geyser",
                 "version" to project.version,
-                "description" to project.description as String,
+                "description" to project.description,
                 "url" to "https://geysermc.org",
                 "author" to "GeyserMC"
             )

build-logic/src/main/kotlin/geyser.publish-conventions.gradle.kts

@@ -7,3 +7,9 @@ indra {
     publishSnapshotsTo("geysermc", "https://repo.opencollab.dev/maven-snapshots")
     publishReleasesTo("geysermc", "https://repo.opencollab.dev/maven-releases")
 }
+
+publishing {
+    // skip shadow jar from publishing. Workaround for https://github.com/johnrengelman/shadow/issues/651
+    val javaComponent = project.components["java"] as AdhocComponentWithVariants
+    javaComponent.withVariantsFromConfiguration(configurations["shadowRuntimeElements"]) { skip() }
+}

build-logic/src/main/kotlin/geyser.shadow-conventions.gradle.kts

@@ -2,11 +2,7 @@ import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 
 plugins {
     id("geyser.base-conventions")
-    id("com.gradleup.shadow")
-}
-
-shadow {
-    addShadowVariantIntoJavaComponent = false
+    id("com.github.johnrengelman.shadow")
 }
 
 tasks {
@@ -37,4 +33,4 @@ tasks {
     named("build") {
         dependsOn(shadowJar)
     }
-}
+}