fix: update license information in pyproject.toml

Author: csgoh

pyproject.toml

@@ -9,10 +9,10 @@ authors = [{ name = "CS Goh" }]
 description = "Roadmapper. A Roadmap-as-Code (RaC) python library for generating a roadmap by using python code"
 readme = "README.md"
 requires-python = ">=3.10"
-license = { file = "LICENSE.md" }
+license = "MIT"
+license-files = ["LICENSE.md"]
 classifiers = [
     "Programming Language :: Python :: 3.10",
-    "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
 ]
 dependencies = ['Pillow>=10.0.0', 'python-dateutil>=2.8.2', 'drawsvg>=2.2.0']