[Bug] ".ico" files (image/x-icon) not supported

[Vadorequest]

Describe the bug
Files with ".ico" extension aren't supported.

To Reproduce
https://cdn.the-funding-place.unly.org//generic-favicon-default8.ico

Expected behavior
All images-based files should use the default browser behavior: display on the browser.

Please complete the following information about the solution:

• Version: 6.0.0
• Region: eu-west-1
• Was the solution modified from the version published on this repository? No

Screenshots

Additional context

{"status":400,"code":"RequestTypeError","message":"The type of request you are making could not be processed. Please ensure that your original image is of a supported file type (jpg, png, tiff, webp, svg) and that your image request is provided in the correct syntax. Refer to the documentation for additional guidance on forming image requests."}

I believe SIH should only "extend" the native browser functionalities, and as such, should behave exactly the same way as the browser does, for all kinds of files.

It is somehow related to #387, but .ico files are definitely images and should definitely be supported.

[dougtoppin]

This is not supported by the Sharp library which is used by this solution.
This issue has been discussed by Sharp lovell/sharp#1118

[Vadorequest]

Then, I suggest it gets ignored to avoid errors. See #387 (comment)