Upload BootImages as archive to allow multiple boot files (archive: true)

.github/workflows/build.yml

@@ -336,7 +336,8 @@ jobs:
           ${{ github.workspace }}/boot-artifacts/${{ steps.extract.outputs.file_name }}-boot-gz.img
           ${{ github.workspace }}/boot-artifacts/${{ steps.extract.outputs.file_name }}-boot-lz4.img
         if-no-files-found: error
-        archive: false
+        archive: true
+        compression-level: 9
 
     - name: Prepare AnyKernel3 Zip
       uses: ./.github/actions/prepare-anykernel3