AboutPopUp: update copyright years

Change-Id: Ifbb9516ce8a10b00b6ef7ec92ee38d71b48cb5a9

src/app/constant/JamiStrings.qml

@@ -46,7 +46,7 @@ Item {
 
     // AboutPopUp
     property string version: qsTr("Version") + (AppVersionManager.isCurrentVersionBeta() ? " (Beta)" : "")
-    property string declarationYear: "© 2015-2023"
+    property string declarationYear: "© 2015-2024"
     property string slogan: "Eleutheria"
     property string declaration: qsTr('Jami, a GNU package, is software for universal and distributed peer-to-peer communication that respects the freedom and privacy of its users. Visit <a href="https://jami.net" style="color: ' + JamiTheme.buttonTintedBlue + '">jami.net</a>' + ' to learn more.')
     property string noWarranty: qsTr('This program comes with absolutely no warranty. See the <a href="https://www.gnu.org/licenses/gpl-3.0.html" style="color: ' + JamiTheme.buttonTintedBlue + '">GNU General Public License</a>, version 3 or later for details.')