Update license in pyproject.toml

Author: wagenrace

pyproject.toml

@@ -5,7 +5,7 @@ description = "Temporal.io Python SDK"
 authors = [{ name = "Temporal Technologies Inc", email = "[email protected]" }]
 requires-python = ">=3.10"
 readme = "README.md"
-license = { file = "LICENSE" }
+license = { file = "LICENSE", text = "MIT" }
 keywords = ["temporal", "workflow"]
 dependencies = [
   "nexus-rpc==1.1.0",