Update all primary buttons to match these two styles.

Default: https://www.figma.com/file/hQKpaGwWFClpLRejn9iI98/Crunchy-Network?node-id=5299%3A10936&t=qEX2pqf2uwH7nV2k-1

On Hover: https://www.figma.com/file/hQKpaGwWFClpLRejn9iI98/Crunchy-Network?node-id=5299%3A10936&t=qEX2pqf2uwH7nV2k-1

Basically, on hover the drop shadow gets slightly larger and the color changes to a slightly darker purple