[BUG] Favicon uncaught exception

[seirdotexe]

Describe the bug
When a favicon isn't found, an uncaught exception is thrown.

ERROR:app:Exception on /favicon.ico [GET]
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/flask/app.py", line 1484, in full_dispatch_request
    rv = self.dispatch_request()
         ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/flask/app.py", line 1458, in dispatch_request
    self.raise_routing_exception(req)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/flask/app.py", line 1440, in raise_routing_exception
    raise request.routing_exception  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/flask/ctx.py", line 353, in match_request
    result = self.url_adapter.match(return_rule=True)  # type: ignore
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/werkzeug/routing/map.py", line 624, in match
    raise NotFound() from None
    ^^^^^^^^^^^^^^^^^^^^^^^^^^
werkzeug.exceptions.NotFound: 404 Not Found: The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.

To Reproduce
Steps to reproduce the behavior:

1. Search anything

Deployment Method

• Heroku (one-click deploy)
• Docker
• run executable
• pip/pipx
• Other: [describe setup]

Version of Whoogle Search

• Latest build from Docker
• Version [version number]
• Not sure

Desktop (please complete the following information):

• OS: Windows 11 x64
• Browser: Firefox 123.0b9 (64-bit)

Additional context
Also reported in #1100 (comment)