Update coverage exclusion line

Preocts · Preocts · commit 93cd9bf83fea · 2025-01-02T19:52:27.000-05:00
This was found to be incorrect in Preocts/secretbox. Now that I've
corrected it, I'm pulling it into the template.
diff --git a/pyproject.toml b/pyproject.toml
@@ -75,5 +75,5 @@ exclude_lines = [
     "raise NotImplementedError",
     "if __name__ == .__main__.:",
     "\\.\\.\\.",
-    "if TYPE_CHECKING:",
+    "if (not)?TYPE_CHECKING:",
 ]
