Pull request: add etc timezones to the timezone list

Updates #6568

Squashed commit of the following:

commit cea0e9143eb1322d359fdb611ea7572431fef623
Merge: 6f4a5b162 b42063ee8
Author: Ildar Kamalov <ik@adguard.com>
Date:   Thu Dec 28 13:40:47 2023 +0300

    Merge branch 'master' into ADG-7953

commit 6f4a5b1629c2e9cffdc23292af8c1319fdd461f1
Merge: c574e3f52 d75712bb9
Author: Ildar Kamalov <ik@adguard.com>
Date:   Wed Dec 27 16:29:53 2023 +0300

    Merge branch 'master' into ADG-7953

commit c574e3f52a73f39044b333a2857a11a23ca997a8
Author: Ildar Kamalov <ik@adguard.com>
Date:   Wed Dec 27 09:52:20 2023 +0300

    ADG-7953 add etc timezones to the timezones list

client/package.json

@@ -16,6 +16,7 @@
         "@nivo/line": "^0.64.0",
         "axios": "^0.19.2",
         "classnames": "^2.2.6",
+        "countries-and-timezones": "^3.6.0",
         "date-fns": "^1.29.0",
         "i18next": "^19.6.2",
         "i18next-browser-languagedetector": "^4.2.0",
@@ -42,7 +43,6 @@
         "redux-actions": "^2.6.5",
         "redux-form": "^8.3.5",
         "redux-thunk": "^2.3.0",
-        "timezones-list": "^3.0.2",
         "url-polyfill": "^1.1.9"
     },
     "devDependencies": {