Accept '.zlib-ng' suffix to zlib version

Author: radarhere

Tests/test_features.py

@@ -37,6 +37,8 @@ def test(name: str, function: Callable[[str], bool]) -> None:
         else:
             assert function(name) == version
             if name != "PIL":
+                if name == "zlib" and version is not None:
+                    version = version.replace(".zlib-ng", "")
                 assert version is None or re.search(r"\d+(\.\d+)*$", version)
 
     for module in features.modules:

Tests/test_file_png.py

@@ -85,7 +85,9 @@ def get_chunks(self, filename: str) -> list[bytes]:
 
     def test_sanity(self, tmp_path: Path) -> None:
         # internal version number
-        assert re.search(r"\d+(\.\d+){1,3}$", features.version_codec("zlib"))
+        assert re.search(
+            r"\d+(\.\d+){1,3}(\.zlib\-ng)?$", features.version_codec("zlib")
+        )
 
         test_file = str(tmp_path / "temp.png")