cleanup: Use deepUnpack() intead of deep_unpack()

deep_unpack() is just a backwards compability alias for deepUnpack()[1].
The new name makes it more clear that this is not a C function, start to
use it.

[1] 13e662a29d

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2416>

js/misc/loginManager.js

@@ -42,7 +42,7 @@ function canLock() {
                                                Gio.DBusCallFlags.NONE,
                                                -1, null);
 
-        let version = result.deep_unpack()[0].deep_unpack();
+        let version = result.deepUnpack()[0].deepUnpack();
         return haveSystemd() && versionCompare('3.5.91', version);
     } catch (e) {
         return false;

js/misc/modemManager.js

@@ -250,14 +250,14 @@ var BroadbandModem = GObject.registerClass({
         this._reloadSignalQuality();
 
         this._proxy_3gpp.connect('g-properties-changed', (proxy, properties) => {
-            let unpacked = properties.deep_unpack();
+            let unpacked = properties.deepUnpack();
             if ('OperatorName' in unpacked || 'OperatorCode' in unpacked)
                 this._reload3gppOperatorName();
         });
         this._reload3gppOperatorName();
 
         this._proxy_cdma.connect('g-properties-changed', (proxy, properties) => {
-            let unpacked = properties.deep_unpack();
+            let unpacked = properties.deepUnpack();
             if ('Nid' in unpacked || 'Sid' in unpacked)
                 this._reloadCdmaOperatorName();
         });

js/misc/weather.js

@@ -294,7 +294,7 @@ var WeatherClient = class extends Signals.EventEmitter {
     }
 
     _onLocationsChanged() {
-        let locations = this._settings.get_value('locations').deep_unpack();
+        let locations = this._settings.get_value('locations').deepUnpack();
         let serialized = locations.shift();
         let mostRecentLocation = null;