Amend README.txt to reflect actual state.

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres:13
+        image: postgres:16
         env:
           POSTGRES_USER: 'postgres'
           POSTGRES_HOST_AUTH_METHOD: 'trust'
@@ -16,7 +16,7 @@ jobs:
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 3
 
       mariadb:
-        image: mariadb:10
+        image: mariadb:10.6
         env:
           MYSQL_USER: 'root'
           MYSQL_ALLOW_EMPTY_PASSWORD: "true"
@@ -33,6 +33,9 @@ jobs:
           - php: '8.3'
             moodle-branch: 'main'
             database: 'pgsql'
+          - php: '8.3'
+            moodle-branch: 'MOODLE_405_STABLE'
+            database: 'mariadb'
           - php: '8.2'
             moodle-branch: 'MOODLE_404_STABLE'
             database: 'pgsql'

README.txt

@@ -5,9 +5,11 @@ survey tool.
 --------------------------------------------------------------------------------
 Developers Note:
 
-There is no main branch. Questionnaire is maintained in MOODLE_XX_STABLE
+There is no main branch. Questionnaire is maintained in MOODLE_XXX_STABLE
 branches. Use the latest STABLE branch for development or installation.
-The current stable branch is MOODLE_400_STABLE, and supports Moodle 4.0 and up.
+The current stable branch is MOODLE_404_STABLE, and supports Moodle 4.4 and up.
+Use the MOODLE_401_STABLE branch for Moodle 4.1 through 4.3.
+Use the MOODLE_400_STABLE branch for Moodle 4.0.
 Use the MOODLE_311_STABLE branch for Moodle 3.9 through 3.11.
 
 --------------------------------------------------------------------------------

tests/custom_completion_test.php

@@ -178,7 +178,7 @@ public function test_is_defined() {
      *
      * @return array[]
      */
-    public function get_available_custom_rules_provider(): array {
+    public static function get_available_custom_rules_provider(): array {
         return [
             'Completion submit available' => [
                 COMPLETION_ENABLED, ['completionsubmit']