Update LIFECYCLE.md

Signed-off-by: Marijn van Wezel <96489967+marijnvanwezel@users.noreply.github.com>

Author: marijnvanwezel

LIFECYCLE.md

@@ -18,4 +18,5 @@ loss and/or corruption.
 
 | Major version    | PHP version | Initial release | End of bugfix support |
 |------------------|-------------|-----------------|-----------------------|
-| php-cypher-dsl 5 | >=7.4    | Jan 9th, 2023   | To be determined      |
+| php-cypher-dsl 5 | >=7.4    | Jan 9th, 2023   | Mar 19th, 2024        |
+| php-cypher-dsl 6 | >=7.4    | Sep 19th, 2023  | To be determined      |