new release 5.1.0 with Carbon 2 is not available via composer and isn't on packagist

[vesper8]

Hi @Bogardo, I really appreciate that you took the time to tag a new release with the Carbon 2 update, however it looks like it isn't tagged properly because I can't install it via Composer "bogardo/mailgun": "^5.1.0" and Packagist does not show anything about this new release either https://packagist.org/packages/bogardo/mailgun

Could you please check to see what went wrong? Thanks!

[connecteev]

@vesper8 hi again! can you try this and see if it works for you? It did for me. #156