add avif to static_ignores.log test for regression

Author: Cassia Duske

tests/logs/static_ignores.log

@@ -2,3 +2,4 @@ www.example.com 1.2.3.4 - theuser [10/Feb/2012:16:41:07 -0500] "GET / HTTP/1.0"
 www.example.com 2.2.3.4 - auser [10/Feb/2012:16:42:07 -0500] "GET /robots.txt HTTP/1.0" 200 368 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.1.963.56 Safari/535.11"
 www.example.com 3.2.3.4 - myuser [10/Feb/2012:16:43:07 -0500] "GET /image.png HTTP/1.0" 200 368 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.2.963.56 Safari/535.11"
 www.example.com 4.2.3.4 - nouser [10/Feb/2012:16:44:07 -0500] "GET /font.woff2 HTTP/1.0" 200 368 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.3.963.56 Safari/535.11"
+www.example.com 4.2.3.4 - nouser [10/Feb/2012:16:44:07 -0500] "GET /image.avif HTTP/1.0" 200 368 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.3.963.56 Safari/535.11"