Update LabyGradle to 0.8.0, sync CI workflow

Author: R0bbyYT

.github/workflows/build.yml

@@ -26,6 +26,8 @@ jobs:
         run: chmod +x gradlew
       - name: Build with Gradle
         run: ./gradlew build --full-stacktrace
+      - name: Create Release Artifact
+        run: ./gradlew createReleaseJar
       - name: Upload Artifact
         uses: actions/upload-artifact@v6
         with:

settings.gradle.kts

@@ -1,7 +1,7 @@
 rootProject.name = "optifine"
 
 pluginManagement {
-    val labyGradlePluginVersion = "0.7.0-SNAPSHOT"
+    val labyGradlePluginVersion = "0.8.0"
     buildscript {
         repositories {
             maven("https://dist.labymod.net/api/v1/maven/release/")