Bump deps and tools (#48)

Author: gaborbernat

setup.cfg

@@ -29,7 +29,7 @@ project_urls =
 packages = find:
 install_requires =
     devpi-client>=6.0.2
-    devpi-server>=6.7
+    devpi-server>=6.8
 python_requires = >=3.7
 include_package_data = True
 package_dir =