main.py: Actually use sys.argv

I set this but never actually passed it to the subprocess. Now I'm
wondering if I actually need it, or if that was just when I was tr-
ying to import the csv-metadata-quality module?

main.py

@@ -64,7 +64,7 @@ def process_file(base64slug):
     # run subprocess and capture output as UTF-8 so we get a string instead of
     # bytes for ansi2html
     results = subprocess.run(
-        ["csv-metadata-quality", "-i", input_file, "-o", output_file],
+        ["csv-metadata-quality"] + sys.argv[1:],
         capture_output=True,
         encoding="UTF-8",
     )