Merge branch '4.4' into 5.3

* 4.4: (22 commits)
  [PhpUnitBridge] fix symlink to bridge in docker by making its path relative
  [Dotenv] Duplicate $_SERVER values in $_ENV if they don't exist
  Add polish translations (#43725)
  [Validator] Update validators.bs.xlf
  [Messenger] Fix `TraceableMessageBus` implementation so it can compute caller even when used within a callback
  [Validator] Add the missing translations for Russian (ru)
  [Validator] Added missing translations for Latvian (lv)
  [Validator] Added missing translations
  [Validator] Add missing translations for Vietnamese (VI)
  Add missing translations for Lithuanian (lt)
  [Validator] Add missing translations for Italian (it) #43722
  Add missing translations for Ukrainian
  Add missing translations for Bulgarian
  Add missing translations for Dutch (nl)
  Update validators.es.xlf
  update zh_TW translation
  [Validator] Added Danish translations
  added missing translations for Serbian Latin (sr_Latn) #43734
  [Validator] Added Chinese(zh_CN) translations
  [Validator] Add missing Hungarian translations
  ...

Author: derrabus

Resources/translations/validators.bs.xlf

@@ -16,7 +16,7 @@
             </trans-unit>
             <trans-unit id="99">
                 <source>This value is not a valid HTML5 color.</source>
-                <target>Ova vrijednost nije ispravna HTML5 boja.</target>
+                <target>Ova vrijednost nije važeća HTML5 boja.</target>
             </trans-unit>
             <trans-unit id="100">
                 <source>Please enter a valid birthdate.</source>