Changing all pyproject requires-python to 3.10

We have some libraries like `TypeAlias` that require Python 3.10, as flagged by #1143

We're just going to be consistent for all extensions (even the ones that don't use the 3.10 libraries).

I'm also going to re-publish and build the libraries (and includes this in the release notes!)

python/pyproject.toml

@@ -9,7 +9,7 @@ authors = [
 ]
 description = "Python library for LastMile AI API"
 readme = "README.md"
-requires-python = ">=3.7"
+requires-python = ">=3.10"
 classifiers = [
   "Intended Audience :: Developers",
   "Programming Language :: Python :: 3",