main/libjpeg-turbo: upgrade to 3.1.0

SODIFF:
-usr/lib/libturbojpeg.so.0.3.0:    SONAME               libturbojpeg.so.0
+usr/lib/libturbojpeg.so.0.4.0:    SONAME               libturbojpeg.so.0

$ apk list --depends so:libturbojpeg.so.0.3.0
$