ci: force gradle 8.13

Author: WolfyScript

.github/workflows/publish_release.yml

@@ -19,6 +19,8 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
+        with:
+          gradle-version: '8.13'
 
       - name: Execute Gradle build
         run: gradle build shadowJar artifactoryPublish
@@ -39,6 +41,8 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
+        with:
+          gradle-version: '8.13'
 
       - name: Execute Gradle build
         run: gradle build shadowJar modrinth