Update installation language date on version bump (#35097)

Author: HLeithner

build/bump.php

@@ -47,7 +47,7 @@ function usage($command)
 	'/language/en-GB/install.xml',
 	'/administrator/language/en-GB/langmetadata.xml',
 	'/administrator/language/en-GB/install.xml',
-	'/installation/language/en-GB/en-GB.xml',
+	'/installation/language/en-GB/langmetadata.xml',
 	'/api/language/en-GB/langmetadata.xml'
 );
 

installation/language/en-GB/langmetadata.xml

@@ -2,7 +2,7 @@
 <metafile client="installation">
 	<name>English (United Kingdom)</name>
 	<version>4.0.0</version>
-	<creationDate>October 2019</creationDate>
+	<creationDate>August 2021</creationDate>
 	<author>Joomla! Project</author>
 	<copyright>(C) 2005 Open Source Matters, Inc.</copyright>
 	<license>GNU General Public License version 2 or later; see LICENSE.txt</license>

installation/language/en-US/langmetadata.xml

@@ -2,7 +2,7 @@
 <metafile client="installation">
 	<name>English (United States)</name>
 	<version>4.0.0</version>
-	<creationDate>October 2019</creationDate>
+	<creationDate>August 2021</creationDate>
 	<author>Joomla! Project</author>
 	<copyright>(C) 2008 Open Source Matters, Inc.</copyright>
 	<license>GNU General Public License version 2 or later; see LICENSE.txt</license>