Update mypy + adjust set_mime_data buffer type

.flake8

@@ -1,6 +1,6 @@
 [flake8]
 ignore=E402,E741
 builtins=buffer,unichr
-max-line-length = 100
+max-line-length = 110
 exclude = build,.git,.venv
 filename = *.py,*.pyi

cairo/__init__.pyi

@@ -2307,7 +2307,7 @@ class Surface:
         forth. The result can then be used with :class:`ScaledFont`.
         """
 
-    def get_mime_data(self, mime_type: str) -> Optional[bytes]:
+    def get_mime_data(self, mime_type: str) -> Union[bytes, bytearray, memoryview, None]:
         """
         :param mime_type: the MIME type of the image data
             (:ref:`constants_MIME_TYPE`)
@@ -2453,7 +2453,7 @@ class Surface:
         .. versionadded:: 1.2
         """
 
-    def set_mime_data(self, mime_type: str, data: Optional[bytes]) -> None:
+    def set_mime_data(self, mime_type: str, data: Union[bytes, bytearray, memoryview, None]) -> None:
         """
         :param mime_type: the MIME type of the image data
             (:ref:`constants_MIME_TYPE`)

pyproject.toml

@@ -22,7 +22,7 @@ optional = true
 [dependency-groups]
 dev = [
     "pytest>=8.3.0,<10",
-    "mypy==1.18.2 ; platform_python_implementation != 'PyPy'",
+    "mypy==2.3.0 ; platform_python_implementation != 'PyPy'",
     "flake8>=7.0.0,<8",
     "coverage[toml]>=7.2.3,<8",
     "meson-python>= 0.16.0",

tests/test_surface.py

@@ -501,6 +501,18 @@ def test_surface_get_set_mime_data() -> None:
     with pytest.raises(TypeError):
         surface.get_mime_data(object())  # type: ignore
 
+    v = memoryview(b"bla")
+    surface.set_mime_data("foo", v)
+    assert surface.get_mime_data("foo") is v
+    surface.set_mime_data("foo", None)
+    assert surface.get_mime_data("foo") is None
+
+    vb = bytearray(b"bla")
+    surface.set_mime_data("foo", vb)
+    assert surface.get_mime_data("foo") is vb
+    surface.set_mime_data("foo", None)
+    assert surface.get_mime_data("foo") is None
+
 
 def test_supports_mime_type() -> None:
     surface = cairo.PDFSurface(None, 3, 3)