Skip tests failing on windows due to lacking environment

test/cli_test.py

@@ -2,6 +2,7 @@
 import os.path
 import platform
 import shutil
+import sys
 from pathlib import Path
 from time import sleep
 
@@ -340,6 +341,9 @@ def test_unkown_collection(self):
             self.runcli("alt", "update", "unkown")
         assert str(e.value) == "Alternative collection 'unkown' not found."
 
+    @pytest.mark.skipif(
+        sys.platform.startswith("win"), reason="Image conversion not available"
+    )
     def test_embed_art(self, tmp_path: Path):
         """Test that artwork is embedded and updated to match the source file.