Bitcoin icon issue
Related icons:
- currency_bitcoin_line
- currency_bitcoin_fill
- exchange_bitcoin_line
- exchange_bitcoin_fill

There are two vertical lines in Bitcoin.

Reference Unicode:
![image](https://user-images.githubusercontent.com/94159664/153822322-168430b3-ca4c-4e69-ad3a-ef145e16f0e7.png)
