IBX-7057: Fixed license for open source use

COPYRIGHT

@@ -3,7 +3,7 @@ Copyright (C) 1999-2023 Ibexa AS (formerly eZ Systems AS). All rights reserved.
 This source code is available separately under the following licenses:
 
 A - Ibexa Business Use License Agreement (Ibexa BUL),
-version 2.3 or later versions (as license terms may be updated from time to time)
+version 2.4 or later versions (as license terms may be updated from time to time)
 Ibexa BUL is granted by having a valid Ibexa DXP (formerly eZ Platform Enterprise) subscription,
 as described at: https://www.ibexa.co/product
 For the full Ibexa BUL license text, please see:
@@ -12,9 +12,7 @@ For the full Ibexa BUL license text, please see:
 
 AND
 
-B - Ibexa Trial and Test License Agreement (Ibexa TTL),
-version 2.2 or later versions (as license terms may be updated from time to time)
-Trial can be granted by Ibexa, reach out to Ibexa AS for evaluation access: https://www.ibexa.co/about-ibexa/contact-us
-For the full Ibexa TTL license text, please see:
+B - GNU General Public License, version 2
+Grants an copyleft open source license with ABSOLUTELY NO WARRANTY. For the full GPL license text, please see:
 - LICENSE file placed in the root of this source code, or
-- https://www.ibexa.co/software-information/licenses-and-agreements (latest version applies)
+- https://www.gnu.org/licenses/old-licenses/gpl-2.0.html