Fix dependencies and bump dev versions

Author: oscar.butler

pyproject.toml

@@ -16,12 +16,12 @@ classifiers = [
 
 [tool.poetry.dependencies]
 python = "^3.8"
-pytest-timeout = "^1.4.2"
 
 [tool.poetry.dev-dependencies]
-pytest = "^6.0.1"
-mypy = "^0.782"
+pytest = "^6.2.5"
+pytest-timeout = "^2.0.2"
+mypy = "v0.931"
 
 [build-system]
-requires = ["poetry>=0.12"]
+requires = ["poetry>=1.1.12"]
 build-backend = "poetry.masonry.api"