Add type stubs for mypy

Author: rdettai

distribution/lambda/Pipfile

@@ -13,11 +13,10 @@ boto3 = "1.28.59"
 mypy = "1.7.0"
 ziglang = "0.11.0"
 
-# boto3-stubs = "^1.28.39"
-# types-requests = "^2.31.0.2"
-# types-pyyaml = "^6.0.12.11"
-
-[dev-packages]
+# types
+boto3-stubs = "1.28.59"
+types-requests = "2.31.0.2"
+types-pyyaml = "6.0.12.11"
 
 [requires]
 python_version = ">=3.10,<4.0"