misc: bump QML modules versions to x.15

src/DaemonReconnectWindow.qml

src/MainApplicationWindow.qml

src/commoncomponents/AccountMigrationDialog.qml

src/commoncomponents/Avatar.qml

src/commoncomponents/BackButton.qml

src/commoncomponents/BaseDialog.qml

src/commoncomponents/BubbleLabel.qml

src/commoncomponents/CustomBorder.qml

src/commoncomponents/DaemonReconnectPopup.qml

src/commoncomponents/DeleteAccountDialog.qml

src/commoncomponents/ElidedTextLabel.qml

src/commoncomponents/GeneralWebEngineView.qml

src/commoncomponents/HalfPill.qml

src/commoncomponents/JamiFileDialog.qml

src/commoncomponents/JamiSwitch.qml

src/commoncomponents/LineEditContextMenu.qml

src/commoncomponents/ListViewJami.qml

src/commoncomponents/MaterialButton.qml

src/commoncomponents/MaterialLineEdit.qml

src/commoncomponents/MaterialToolTip.qml