create tar artifact instead of zip

.github/workflows/continuous_integration.yml

@@ -37,14 +37,14 @@ jobs:
         run: |
           pushd build/libs
           cp ${{ steps.exec.outputs.slimjar }} NiSCore-SLIM.jar
-          cp ${{ steps.exec.outputs.libszip }} NiSCore-libs.zip
+          cp ${{ steps.exec.outputs.libstar }} NiSCore-libs.tar.gz
           cp ${{ steps.exec.outputs.fatjar }} NiSCore-FAT.jar
           popd
 
       - name: Create release if this is a tagged workflow
         uses: ncipollo/release-action@v1
         if: startsWith(github.ref, 'refs/tags/')
         with:
-          artifacts: build/libs/NiSCore-SLIM.jar,build/libs/NiSCore-libs.zip,build/libs/NiSCore-FAT.jar
+          artifacts: build/libs/NiSCore-SLIM.jar,build/libs/NiSCore-libs.tar.gz,build/libs/NiSCore-FAT.jar
           name: NiSCore ${{ steps.exec.outputs.version }}
           token: ${{ secrets.GITHUB_TOKEN }}

build.gradle

@@ -100,9 +100,11 @@ jar {
 //    into tasks.jar.destinationDirectory.dir("libs")
 //  }
 
-  finalizedBy task("zipLibs", type: Zip) {
+  finalizedBy task("tarLibs", type: Tar) {
     archiveBaseName = "$archivesBaseName-libs"
+    archiveExtension = "tar.gz"
     destinationDirectory = tasks.jar.destinationDirectory
+    compression = org.gradle.api.tasks.bundling.Compression.GZIP
 
     from configurations.compileJar
   }
@@ -146,7 +148,7 @@ task createGitHubActionsVars() {
   onlyIf { isCiBuilding }
   doFirst {
     println "::set-output name=slimjar::${jar.archiveFileName.get()}"
-    println "::set-output name=libszip::${tasks.zipLibs.archiveFileName.get()}"
+    println "::set-output name=libstar::${tasks.tarLibs.archiveFileName.get()}"
     println "::set-output name=fatjar::${fatJar.archiveFileName.get()}"
     println "::set-output name=version::${project.version}"
   }