Remove deprecated setup_requires from setup.cfg and update setuptools version in pyproject.toml.

Signed-off-by: Chin Yeung Li <tli@nexb.com>

Author: chinyeungli

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools >= 50", "wheel", "setuptools_scm[toml] >= 6"]
+requires = ["setuptools>=64.0", "wheel", "setuptools_scm[tomm]>=8.0"]
 build-backend = "setuptools.build_meta"
 
 [tool.setuptools_scm]
@@ -68,7 +68,7 @@ include = [
   "."
 
 ]
-# ignore test data and testfiles: they should never be linted nor formatted 
+# ignore test data and testfiles: they should never be linted nor formatted
 exclude = [
 # main style
   "**/tests/data/**/*",

setup.cfg

@@ -55,8 +55,6 @@ packages = find:
 include_package_data = true
 zip_safe = false
 
-setup_requires = setuptools_scm[toml] >= 4
-
 install_requires =
     attrs
     boolean.py >= 3.5