chore: move mypy config to pyproject.toml (#1240)

For some reason this exposed a type error 🤷?

Author: gadomski

CHANGELOG.md

@@ -10,6 +10,7 @@
 
 - Typing of `href` arguments ([#1234](https://github.com/stac-utils/pystac/pull/1234))
 - Interactions between **pytest-recording** and the validator schema cache ([#1242](https://github.com/stac-utils/pystac/pull/1242))
+- Call `registry` when instantiating `Draft7Validator` ([#1240](https://github.com/stac-utils/pystac/pull/1240))
 
 ### Removed
 

mypy.ini

@@ -56,6 +56,7 @@ test = [
     "ruff==0.0.291",
     "types-html5lib~=1.1",
     "types-orjson~=3.6",
+    "types-jsonschema~=4.18",
     "types-python-dateutil~=2.8",
     "types-urllib3~=1.26",
 ]
@@ -76,6 +77,14 @@ exclude = ["tests*", "benchmarks*"]
 [tool.setuptools.dynamic]
 version = { attr = "pystac.version.__version__" }
 
+[tool.mypy]
+show_error_codes = true
+strict = true
+
+[[tool.mypy.overrides]]
+module = ["jinja2"]
+ignore_missing_imports = true
+
 [tool.ruff]
 line-length = 88
 select = ["E", "F", "I"]