fix(tests): use icon from GH repository since Wikimedia returns HTTP 429#419

Guts merged 1 commit intomainGuts/mkdocs-rss-plugin:mainfrom

fix/flaky-tests-because-of-http-429-on_remote-wikimediaGuts/mkdocs-rss-plugin:fix/flaky-tests-because-of-http-429-on_remote-wikimediaCopy head branch name to clipboard