fix(pylint): address broad-exception-raised

Signed-off-by: Martin Basti <mbasti@redhat.com>

Author: MartinBasti

tests/test_parser.py

@@ -37,7 +37,7 @@ def read_version(fp, regex):
                 if len(found) == 1:
                     return found[0]
                 else:
-                    raise Exception("Version not found!")
+                    raise RuntimeError("Version not found!")
 
         import dockerfile_parse
         from dockerfile_parse import __version__ as module_version