Git commits in Moodle 3.9.x by Daniel Ziegenberg

commit 05847affc1a8e77a432610c965e41afa8152dc81
Author: Daniel Ziegenberg <daniel@ziegenberg.at>
Date:   Mon, 23 May 2022 05:46:11 +0800
Tag:    v3.9.15

MDL-74835 ci: Update nodejs version in travis integration to lts/gallium


commit d782e766402bdc53baf040139025b2196a817d5a
Author: Daniel Ziegenberg <daniel@ziegenberg.at>
Date:   Sun, 22 May 2022 23:55:28 +0800
Tag:    v3.9.19

MDL-73017 env: Moodle 3.9.x, 3.11.x and 4.0.x do not support PHP 8.1