treewide: Disable automatic argparse argument shortening

Disables allowing the python argparse library from automatically
shortening command line arguments, this prevents issues whereby
a new command is added and code that wrongly uses the shortened
command of an existing argument which is the same as the new
command being added will silently change script behaviour.

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>
diff --git a/scripts/dump_bugs_pickle.py b/scripts/dump_bugs_pickle.py
index 892cd32..732ba7c 100755
--- a/scripts/dump_bugs_pickle.py
+++ b/scripts/dump_bugs_pickle.py
@@ -15,7 +15,7 @@
 
 def parse_args() -> argparse.Namespace:
     parser = argparse.ArgumentParser(
-        formatter_class=argparse.RawDescriptionHelpFormatter)
+        formatter_class=argparse.RawDescriptionHelpFormatter, allow_abbrev=False)
 
     parser.add_argument('pickle_file', metavar='PICKLE-FILE', type=Path,
                         help='pickle file containing list of issues')