Add twine + keyring for macOS releasing ease

Author: gjoseph92

poetry.lock

@@ -40,6 +40,8 @@ sat-search = "^0.3.0"
 sat-stac = "^0.4.1"
 snakeviz = "^2.1.0"
 sphinx-autobuild = "^2020.9.1"
+twine = "^3.4.1"
+keyring = "^23.0.1"
 
 [tool.poetry.extras]
 docs = [