Bump github.com/mattermost/mattermost-server/v6 from 6.1.0 to 6.3.0 (#1686)

Bumps [github.com/mattermost/mattermost-server/v6](https://github.com/mattermost/mattermost-server) from 6.1.0 to 6.3.0.
- [Release notes](https://github.com/mattermost/mattermost-server/releases)
- [Changelog](https://github.com/mattermost/mattermost-server/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mattermost/mattermost-server/compare/v6.1.0...v6.3.0)

---
updated-dependencies:
- dependency-name: github.com/mattermost/mattermost-server/v6
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

vendor/github.com/mattermost/mattermost-server/v6/model/feature_flags.go

@@ -25,9 +25,12 @@ type FeatureFlags struct {
 	// Enable the remote cluster service for shared channels.
 	EnableRemoteClusterService bool
 
-	// AppsEnabled toggle the Apps framework functionalities both in server and client side
+	// AppsEnabled toggles the Apps framework functionalities both in server and client side
 	AppsEnabled bool
 
+	// AppBarEnabled toggles the App Bar component on client side
+	AppBarEnabled bool
+
 	// Feature flags to control plugin versions
 	PluginPlaybooks  string `plugin_id:"playbooks"`
 	PluginApps       string `plugin_id:"com.mattermost.apps"`
@@ -41,14 +44,9 @@ type FeatureFlags struct {
 	// Enable different team menu button treatments, possible values = ("none", "by_team_name", "inverted_sidebar_bg_color")
 	AddChannelButton string
 
-	// Enable different treatments for first time users, possible values = ("none", "tour_point", "around_input")
-	PrewrittenMessages string
-
-	// Enable different treatments for first time users, possible values = ("none", "tips_and_next_steps")
-	DownloadAppsCTA string
-
 	// Determine whether when a user gets created, they'll have noisy notifications e.g. Send desktop notifications for all activity
 	NewAccountNoisy bool
+
 	// Enable Boards Unfurl Preview
 	BoardsUnfurl bool
 
@@ -57,6 +55,21 @@ type FeatureFlags struct {
 
 	// Start A/B tour tips automatically, possible values = ("none", "auto")
 	AutoTour string
+
+	// A dash separated list for feature flags to turn on for Boards
+	BoardsFeatureFlags string
+
+	// A/B test for the add members to channel button, possible values = ("top", "bottom")
+	AddMembersToChannel string
+
+	// Enable Create First Channel
+	GuidedChannelCreation bool
+
+	// Determine after which duration in hours to send a second invitation to someone that didn't join after the initial invite, possible values = ("48", "72")
+	ResendInviteEmailInterval string
+
+	// A/B test for whether radio buttons or toggle button is more effective in in-screen invite to team modal ("none", "toggle")
+	InviteToTeam string
 }
 
 func (f *FeatureFlags) SetDefaults() {
@@ -66,17 +79,21 @@ func (f *FeatureFlags) SetDefaults() {
 	f.CollapsedThreads = true
 	f.EnableRemoteClusterService = false
 	f.AppsEnabled = false
+	f.AppBarEnabled = false
 	f.PluginApps = ""
 	f.PluginFocalboard = ""
 	f.PermalinkPreviews = true
 	f.GlobalHeader = true
 	f.AddChannelButton = "by_team_name"
-	f.PrewrittenMessages = "tour_point"
-	f.DownloadAppsCTA = "tips_and_next_steps"
 	f.NewAccountNoisy = false
 	f.BoardsUnfurl = true
 	f.CallsMobile = false
 	f.AutoTour = "none"
+	f.BoardsFeatureFlags = ""
+	f.AddMembersToChannel = "top"
+	f.GuidedChannelCreation = false
+	f.ResendInviteEmailInterval = ""
+	f.InviteToTeam = "none"
 }
 
 func (f *FeatureFlags) Plugins() map[string]string {