Add new screenshot UI icons

To replace the applets-screenshooter one that was deprecated and isn't
even available on GNOME OS anymore.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2167>

js/misc/systemActions.js

@@ -137,7 +137,7 @@ const SystemActions = GObject.registerClass({
         this._actions.set(SCREENSHOT_UI_ACTION_ID, {
             // Translators: The name of the screenshot UI action in search
             name: C_('search-result', 'Take a Screenshot'),
-            iconName: 'applets-screenshooter-symbolic',
+            iconName: 'record-screen-symbolic',
             // Translators: A list of keywords that match the screenshot UI action, separated by semicolons
             keywords: tokenizeKeywords(_('screenshot;screencast;snip;capture;record')),
             available: true,