ci: Ignore type warning about soup in test

Author: pawamoy

tests/test_end_to_end.py

@@ -21,7 +21,7 @@
 
 def _normalize_html(html: str) -> str:
     soup = bs4.BeautifulSoup(html, features="html.parser")
-    html = soup.prettify()
+    html = soup.prettify()  # type: ignore[assignment]
     html = re.sub(r"\b(0x)[a-f0-9]+\b", r"\1...", html)
     html = re.sub(r"^(Build Date UTC ?:).+", r"\1...", html, flags=re.MULTILINE)
     html = re.sub(r"\b[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}\b", r"...", html)