Do not compress images in actions/upload-artifact (#2249)

Author: mathbunnyru

.github/workflows/docker-build-test-upload.yml

@@ -127,6 +127,7 @@ jobs:
           name: ${{ inputs.image }}-${{ inputs.platform }}-${{ inputs.variant }}
           path: /tmp/jupyter/images/${{ inputs.image }}-${{ inputs.platform }}-${{ inputs.variant }}.tar.zst
           retention-days: 3
+          compression-level: 0
 
       - name: Run tests ✅
         run: >