Corcel ^5.0 compatibility

[dberry93]

Can the version constraint for jgrossi/corcel be updated to support 5.0?

`
Problem 1

• Can only install one of: jgrossi/corcel[4.0.x-dev, v5.0.0].
• Can only install one of: jgrossi/corcel[v5.0.0, 4.0.x-dev].
• Can only install one of: jgrossi/corcel[4.0.x-dev, v5.0.0].
• corcel/acf 3.0.0 requires jgrossi/corcel ^4.0 -> satisfiable by jgrossi/corcel[4.0.x-dev].
• Installation request for corcel/acf ^3.0 -> satisfiable by corcel/acf[3.0.0].
• Installation request for jgrossi/corcel (locked at v5.0.0, required as ^5.0) -> satisfiable by jgrossi/corcel[v5.0.0]. `

[squatto]

FYI this is good to go as of #94 👍🏻