Update pyproject.toml (#26)

Author: jeriox

pyproject.toml

@@ -8,7 +8,7 @@ readme = "README.md"
 packages = [{include = "railwayroutegenerator"}]
 
 [tool.poetry.dependencies]
-python = "^3.10"
+python = "^3.8"
 yaramo = {git = "https://github.com/simulate-digital-rail/yaramo"}