Update howler.js due to Opera glitch on 100+ versions

[Exnonull]

Loading stuck on 82% on Opera GX.
Then debugged and noticed only audio didn't load, none of files.
After i try to manually replace howler.js 2.0.0 to 2.2.4 on main game page - it's worked.
This issue: goldfire/howler.js#1670
Was solved in 2.2.4 (latest): goldfire/howler.js#1676