Allow `amend!` prefix

[lovetheguitar]

Description

Commitizen already allows fixup! and squash!. Missing from the list in

commitizen/commitizen/defaults.py

Lines 89 to 95 in 75a97e5

	"allowed_prefixes": [
	"Merge",
	"Revert",
	"Pull request",
	"fixup!",
	"squash!",
	],

is only amend!.

See https://git-scm.com/docs/git-commit/2.32.0#Documentation/git-commit.txt---fixupamendrewordcommit how to use/produce it.

If it is desired I'm open to contribute this change.

Possible Solution

Add amend! to the allowed_prefixes list.

Additional context

https://git-scm.com/docs/git-commit/2.32.0#Documentation/git-commit.txt---fixupamendrewordcommit

Related issues

No response

[Lee-W]

sounds good to me!

[lovetheguitar]

Hey @Lee-W,

is there anything I can help with to push this forward?

Thanks for your great work with commitizen. 🐱

[Lee-W]

Our limited bandwidth unfortunately :(
I'll have more time later next month. Hope to take a look at more existing PRs!