Use new gofumpt (#21613)

Update tinylib. Should fix CI.

`gofumpt -w .&&go generate ./...`

internal/event/target/kafka_scram_client_contrib.go

@@ -77,7 +77,7 @@ func (x *XDGSCRAMClient) Begin(userName, password, authzID string) (err error) {
 // completes is also an error.
 func (x *XDGSCRAMClient) Step(challenge string) (response string, err error) {
 	response, err = x.ClientConversation.Step(challenge)
-	return
+	return response, err
 }
 
 // Done returns true if the conversation is completed or has errored.