build(python): fix support for Python 3.13 (#74)

.github/workflows/tests.yml

@@ -23,6 +23,7 @@ jobs:
           - '3.10'
           - '3.11'
           - '3.12'
+          - '3.13'
 
     name: Python ${{ matrix.python_version }} (${{ matrix.os }})
     steps:

pyproject.toml

@@ -23,7 +23,8 @@ python = "^3.8"
 skyfield = "^1.49"
 numpy = [
     { version = "<1.25", python = "3.8.*" },
-    { version = "^2.0", python = ">=3.9,<3.13" },
+    { version = "<2.1", python = "3.9.*" },
+    { version = "^2.1", python = "^3.10" },
 ]
 skyfield-data = "*"
 python-dateutil = "^2.8"