chore(tooling): better mypy config (ethereum#1756)

* better mypy config

* removed .github from exclusion list

Author: felix314159

pyproject.toml

@@ -126,6 +126,19 @@ ignore = ["D205", "D203", "D212", "D415", "C901", "A005", "C420"]
 
 [tool.mypy]
 mypy_path = ["src", "$MYPY_CONFIG_FILE_DIR/stubs"]
+files = ["src", "tests"]
+exclude = [
+    '^\.cache/',
+    '^\.git/',
+    '^\.pytest_cache/',
+    '^\.ruff_cache/',
+    '^\.tox/',
+    '^\.venv/',
+    '^\.vscode/',
+    '^fixtures/',
+    '^logs/',
+    '^site/',
+    ]
 plugins = ["pydantic.mypy"]
 
 [tool.codespell]