fix: update license in pyproject.toml

Author: mivek

pyproject.toml

@@ -11,7 +11,8 @@ version = "1.9.0"
 description = "Python project parsing metar and taf message"
 readme = "README.md"
 requires-python = ">=3.7"
-license = { file = "LICENSE" }
+license = "MIT"
+license-files = ["LICENSE"]
 authors = [
     { name = "Jean-Kevin KPADEY", email = "jeankevin.kpadey@gmail.com" }
 ]