Update the list of authors.

AUTHORS.md

@@ -11,7 +11,7 @@ This is the official list of Fireworqonsole authors for copyright purposes.
 |INA Lintaro|<[email protected]>|[@tarao](https://github.com/tarao)|488|
 |itchyny|<[email protected]>||58|
 |Tomohiro Nishimura|<[email protected]>|[@Sixeight](https://github.com/Sixeight)|19|
-|yigarashi|<[email protected]>||6|
+|yigarashi|<[email protected]>||7|
 |MURATA Satoshi|<[email protected]>||1|
 
 Items are automatically added by `git shortlog -sne`.  Please add rules to [`.mailmap`](.mailmap) to keep it canonical (see "MAPPING AUTHORS" section of `git help shortlog` for the notation of the rules).  E-mail field must match your public E-mail setting on your GitHub account if you wish to show your GitHub account name.