Bump gocui

... and import stefanhaller's tcell fork for real rather than just replacing it

This solves the problem that people trying to
"go install github.com/jesseduffield/lazygit@latest" would get the error

go: github.com/jesseduffield/lazygit@latest (in github.com/jesseduffield/lazygit@v0.40.0):
  The go.mod file for the module providing named packages contains one or
  more replace directives. It must not contain directives that would cause
  it to be interpreted differently than if it were the main module.

vendor/github.com/gdamore/tcell/v2/interrupt.go

@@ -1,41 +0,0 @@
-// Copyright 2015 The TCell Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use file except in compliance with the License.
-// You may obtain a copy of the license at
-//
-//    http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package tcell
-
-import (
-	"time"
-)
-
-// EventInterrupt is a generic wakeup event.  Its can be used to
-// to request a redraw.  It can carry an arbitrary payload, as well.
-type EventInterrupt struct {
-	t time.Time
-	v interface{}
-}
-
-// When returns the time when this event was created.
-func (ev *EventInterrupt) When() time.Time {
-	return ev.t
-}
-
-// Data is used to obtain the opaque event payload.
-func (ev *EventInterrupt) Data() interface{} {
-	return ev.v
-}
-
-// NewEventInterrupt creates an EventInterrupt with the given payload.
-func NewEventInterrupt(data interface{}) *EventInterrupt {
-	return &EventInterrupt{t: time.Now(), v: data}
-}