deps: Update dependency mypy to >=1.20.0 (#693)

renovate[bot] · lucascolley · web-flow · commit d864f048aaa6 · 2026-04-18T17:09:02.000+01:00
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
Co-authored-by: Lucas Colley &lt;lucas.colley8@gmail.com&gt;
diff --git a/pixi.lock b/pixi.lock
diff --git a/pyproject.toml b/pyproject.toml
@@ -92,7 +92,7 @@ array-api-extra.path = "."
 [tool.pixi.feature.lint.dependencies]
 typing-extensions = ">=4.15.0"
 pylint = ">=4.0.5"
-mypy = ">=1.19.1"
+mypy = ">=1.20.0"
 basedpyright = ">=1.39.0"
 numpydoc = ">=1.10.0,<2"
 # import dependencies for mypy:
diff --git a/src/array_api_extra/_lib/_utils/_helpers.py b/src/array_api_extra/_lib/_utils/_helpers.py
@@ -407,7 +407,7 @@ def persistent_id(
             self, obj: object
         ) -> Literal[0, 1, None]:  # numpydoc ignore=GL08
             if isinstance(obj, cls):
-                instances.append(obj)  # type: ignore[arg-type]
+                instances.append(obj)
                 return 0
 
             typ_ = type(obj)
