Add mypy to dev requirements

CraftSpider · CraftSpider · commit 4651bc8dd828 · 2026-01-05T13:10:31.000-08:00
diff --git a/dev-requirements.txt b/dev-requirements.txt
@@ -9,3 +9,4 @@ build
 flake8~=7.0.0
 pynacl
 typing-extensions
+mypy
