Fix Slack usergroup changes from latest release

Author: mike-gregory-ovo

adapters/slack/usergroup/usergroup.go

@@ -73,10 +73,10 @@ var (
 
 // iSlackUserGroup is a subset of the Slack Client, and used to build mocks for easy testing.
 type iSlackUserGroup interface {
-	GetUserGroupMembersContext(ctx context.Context, userGroup string) ([]string, error)
+	GetUserGroupMembersContext(ctx context.Context, userGroup string, options ...slack.GetUserGroupMembersOption) ([]string, error)
 	GetUsersInfoContext(ctx context.Context, users ...string) (*[]slack.User, error)
 	GetUserByEmailContext(ctx context.Context, email string) (*slack.User, error)
-	UpdateUserGroupMembersContext(ctx context.Context, userGroup string, members string) (slack.UserGroup, error)
+	UpdateUserGroupMembersContext(ctx context.Context, userGroup string, members string, options ...slack.UpdateUserGroupMembersOption) (slack.UserGroup, error)
 }
 
 type UserGroup struct {

adapters/slack/usergroup/usergroup_internal_test.go

@@ -130,7 +130,7 @@ func TestUserGroup_Add(t *testing.T) {
 		slackClient.EXPECT().GetUserByEmailContext(ctx, "buzz@email").Return(&slack.User{ID: "buzz"}, nil)
 		slackClient.EXPECT().UpdateUserGroupMembersContext(ctx,
 			"test", mock.Anything,
-		).Run(func(_ context.Context, userGroup string, members string) { //nolint:contextcheck
+		).Run(func(ctx context.Context, userGroup, members string, _ ...slack.UpdateUserGroupMembersOption) { //nolint:contextcheck
 			assert.Equal(t, "test", userGroup)
 			assert.ElementsMatch(t, strings.Split(members, ","), []string{"foo", "bar", "fizz", "buzz"})
 		}).Return(slack.UserGroup{DateDelete: 0}, nil)