Sem-ver: bugfix allow pbr versions < 8 to be used

Signed-off-by: David Black <dblack@atlassian.com>

Author: dbaxa

setup.py

@@ -2,7 +2,7 @@
 from setuptools import setup
 
 setup(
-    setup_requires=["pbr<7.0.0"],
+    setup_requires=["pbr<8.0.0"],
     pbr=True,
     platforms=["any"],
     zip_safe=False,