chore: cleanup pre-commit a bit

[henryiii]

Small things I found to clean up. I was trying out ty, and noticed this cleanup while testing it.

Diff to try out ty

diff --git a/noxfile.py b/noxfile.py
index 046ec14..7505b8e 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -118,6 +118,18 @@ def docs(session: nox.Session) -> None:
         )


+@nox.session(default=False)
+def mypy(session: nox.Session) -> None:
+    session.install("--group=typing", "mypy", "orjson")
+    session.run("mypy")
+
+
+@nox.session(default=False)
+def ty(session: nox.Session) -> None:
+    session.install("--group=typing", "ty")
+    session.run("ty", "check")
+
+
 @nox.session(default=False)
 def release(session: nox.Session) -> None:
     """
diff --git a/pyproject.toml b/pyproject.toml
index de92ac7..a5c4c8a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,6 +50,14 @@ docs = [
     "sphinx-toolbox",
     "typing-extensions>=4.1.0; python_version < '3.9'",
 ]
+typing = [
+  "nox",
+  "pytest<9",
+  "tomli",
+  "tomli_w",
+  "types-invoke",
+  "httpx",
+]


 [tool.flit.sdist]
@@ -96,6 +104,13 @@ files = ["src", "tests", "noxfile.py"]
 module = ["_manylinux", "pretend", "progress.*", "pkg_resources"]
 ignore_missing_imports = true

+
+[tool.ty]
+rules.unused-ignore-comment = "ignore"
+analysis.allowed-unresolved-imports = ["_manylinux", "pretend", "progress.*", "pkg_resources"]
+src.exclude = ["tasks/check.py"]
+
+
 [tool.ruff]
 extend-exclude = [
     "src/packaging/licenses/_spdx.py"