Make pylint spelling dependency explicit

Author: adamtheturtle

pyproject.toml

@@ -66,7 +66,7 @@ optional-dependencies.dev = [
     "mypy-strict-kwargs==2025.4.3",
     "pre-commit==4.3.0",
     "pydocstyle==6.3",
-    "pylint==3.3.8",
+    "pylint[spelling]==3.3.8",
     "pylint-per-file-ignores==2.0.3",
     "pyproject-fmt==2.6.0",
     "pyright==1.1.405",