Breaking change between btcec/v2 minor versions v2.3.2 and v2.3.4

[joshklop]

SignCompact's return type changed from ([]byte, error) to []byte.

Before:

btcd/btcec/ecdsa/signature.go

Lines 219 to 220 in 4350859

	func SignCompact(key *btcec.PrivateKey, hash []byte,
	isCompressedKey bool) ([]byte, error) {

After:

btcd/btcec/ecdsa/signature.go

Lines 235 to 236 in ff2e03e

	func SignCompact(key *btcec.PrivateKey, hash []byte,
	isCompressedKey bool) []byte {

Would it be possible to retract the v2.3.4 version (and possibly v2.3.3) in the go.mod file?

cc @NiloCK

[Roasbeef]

See #2221

[joshklop]

Thanks @Roasbeef. If retracting the version has already been decided against, this issue can be closed. Otherwise, it may be beneficial to consider.

[Chan7348]

Why do you change the interface in small version update????????????????