[4.2] Backup confirm message

[joomlapl-bot]

PR w związku ze zmianą oryginału joomla/joomla-cms#38071 Poniżej zmiany w oryginale:

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diff --git a/administrator/language/en-GB/com_joomlaupdate.ini b/administrator/language/en-GB/com_joomlaupdate.ini
index 6d94e584d73f..fce3a0c8bf09 100644
--- a/administrator/language/en-GB/com_joomlaupdate.ini
+++ b/administrator/language/en-GB/com_joomlaupdate.ini
@@ -65,7 +65,7 @@ COM_JOOMLAUPDATE_SELF_EMPTYSTATE_TITLE="A new version of the Joomla Update Compo
 COM_JOOMLAUPDATE_SYSTEM_CHECK="System Check"
 COM_JOOMLAUPDATE_TOOLBAR_CHECK="Check for Updates"
 COM_JOOMLAUPDATE_UPDATE_CHECK="Update Check"
-COM_JOOMLAUPDATE_UPDATE_CONFIRM_BACKUP="I'm prepared for the update and have made a backup of the files and database."
+COM_JOOMLAUPDATE_UPDATE_CONFIRM_BACKUP="I'm aware that a backup before any update is highly recommended."
 COM_JOOMLAUPDATE_UPDATE_EMPTYSTATE_TITLE="Update your site to \"Joomla! %s\""
 COM_JOOMLAUPDATE_UPDATE_EMPTYSTATE_BUTTON_ADD="Start update"
 COM_JOOMLAUPDATE_UPDATE_LOG_CLEANUP="Cleaning up after installation."