use setuptools_scm < 8 for now

https://github.com/pypa/setuptools_scm/issues/938

pyproject.toml

@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools", "pkgconfig", "Cython", "setuptools_scm>=1.7"]
+requires = ["setuptools", "pkgconfig", "Cython", "setuptools_scm>=1.7,<8"]
 build-backend = "setuptools.build_meta"

requirements.d/development.txt

@@ -1,5 +1,5 @@
 setuptools >=45, !=60.6.0, !=60.7.0
-setuptools_scm
+setuptools_scm <8
 pip
 virtualenv
 pkgconfig