fix(l10n): translated using Weblate (Czech)

Currently translated at 98.3% (119 of 121 strings)

Translation: ubuntu-desktop-translations/Ubuntu Flutter Plugins
Translate-URL: https://hosted.weblate.org/projects/ubuntu-desktop-translations/ubuntu-flutter-plugins/cs/

Author: msuchane

packages/ubuntu_localizations/lib/src/l10n/ubuntu_cs.arb

@@ -4,13 +4,13 @@
   "@countryCode": {},
   "languageName": "Čeština",
   "@languageName": {},
-  "weakPassword": "Snadno prolomitelné heslo",
+  "weakPassword": "Prolomitelné heslo",
   "@weakPassword": {},
   "goodPassword": "Přijatelné heslo",
   "@goodPassword": {},
   "fairPassword": "Dobré heslo",
   "@fairPassword": {},
-  "strongPassword": "Prolomení odolné heslo",
+  "strongPassword": "Odolné heslo",
   "@strongPassword": {},
   "backAction": "Jít zpět",
   "@backAction": {},
@@ -200,7 +200,7 @@
   "@selectLabel": {},
   "sendLabel": "Odeslat",
   "@sendLabel": {},
-  "updateLabel": "Zaktualizovat",
+  "updateLabel": "Aktualizovat",
   "@updateLabel": {},
   "upLabel": "Nahoru",
   "@upLabel": {},