pytest: fix dependency

pkgs/patches/pytest/setuptools.patch

@@ -1,12 +1,12 b''
 diff -rup pytest-4.6.5-orig/setup.py pytest-4.6.5/setup.py
 --- pytest-4.6.5-orig/setup.py	2018-04-10 10:23:04.000000000 +0200
 +++  pytest-4.6.5/setup.py	2018-04-10 10:23:34.000000000 +0200
 @@ -24,7 +24,7 @@ INSTALL_REQUIRES = [
  def main():
      setup(
          use_scm_version={"write_to": "src/_pytest/_version.py"},
 -        setup_requires=["setuptools-scm", "setuptools>=40.0"],
-+        setup_requires=["setuptools-scm", "setuptools<=42.0"],
++        setup_requires=["setuptools-scm<6.0.0", "setuptools<=42.0"],
          package_dir={"": "src"},
          # fmt: off
          extras_require={
  No newline at end of file