settings: improve update dialog

Change-Id: I5aa4a5d9fa7c4c40fd001fa78237eb1d96531750
GitLab: #332

src/constant/JamiStrings.qml

@@ -468,6 +468,8 @@ Item {
     // Generic dialog options
     property string optionOk: qsTr("Ok")
     property string optionCancel: qsTr("Cancel")
+    property string optionUpgrade: qsTr("Upgrade")
+    property string optionLater: qsTr("Later")
 
     // Conference moderation
     property string setModerator: qsTr("Set moderator")

src/settingsview/components/UpdateSettings.qml

@@ -167,7 +167,7 @@ ColumnLayout {
 
         property bool beta: false
 
-        buttonTitles: [JamiStrings.optionOk, JamiStrings.optionCancel]
+        buttonTitles: [JamiStrings.optionUpgrade, JamiStrings.optionLater]
         buttonStyles: [
             SimpleMessageDialog.ButtonStyle.TintedBlue,
             SimpleMessageDialog.ButtonStyle.TintedBlue