Add MOODLE_403_STABLE GHA tests

Author: stronk7

.github/workflows/test.yml

@@ -76,6 +76,8 @@ jobs:
         include:
           - php: '8.2'
             moodle-branch: 'master'
+          - php: '8.2'
+            moodle-branch: 'MOODLE_403_STABLE'
           - php: '8.2'
             moodle-branch: 'MOODLE_402_STABLE'
           - php: '8.1'
@@ -194,7 +196,7 @@ jobs:
           - php: '8.2'
             moodle-branch: 'master'
           - php: '8.1'
-            moodle-branch: 'MOODLE_402_STABLE'
+            moodle-branch: 'MOODLE_403_STABLE'
           - php: '8.0'
             moodle-branch: 'MOODLE_401_STABLE'
           - php: '7.4'