Add compatibility for python 3.9

pyproject.toml

@@ -8,8 +8,7 @@ authors = ["Marijn Doeve <marijn@doeve.me>"]
 python = "^3.9"
 fastapi = {extras = ["all"], version = "^0.92.0"}
 pydantic = "^1.10.5"
-projectorpi = {version = "^0.2.0", source = "gitea"}
-requests = "^2.28.2"
+projectorpi = {version = "^0.2.1", source = "gitea"}
 
 [tool.poetry.dev-dependencies]
 pytest = "^5.2"
@@ -20,6 +19,10 @@ url = "https://gitea.marijndoeve.nl/api/packages/Marijn/pypi/simple"
 default = false
 secondary = true
 
+
+[tool.poetry.group.dev.dependencies]
+mypy = "^1.0.1"
+
 [build-system]
 requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"