feat: refresh expired access tokens in one goroutine

internal/bridge/mocks/mocks.go

@@ -5,10 +5,11 @@
 package mocks
 
 import (
+	reflect "reflect"
+
 	credentials "github.com/ProtonMail/proton-bridge/internal/bridge/credentials"
 	pmapi "github.com/ProtonMail/proton-bridge/pkg/pmapi"
 	gomock "github.com/golang/mock/gomock"
-	reflect "reflect"
 )
 
 // MockConfiger is a mock of Configer interface

internal/bridge/user.go

@@ -528,7 +528,6 @@ func (u *User) Logout() (err error) {
 	u.wasKeyringUnlocked = false
 	u.unlockingKeyringLock.Unlock()
 
-	// TODO: Is this necessary or could it be done by ClientManager when a nil auth is received?
 	u.client().Logout()
 
 	if err = u.credStorer.Logout(u.userID); err != nil {