Resolve conflict and trim Moodle CI matrix to PHP 8.1+ / Moodle 4.5

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: allanhaggett

.github/workflows/moodle-ci.yml

@@ -13,7 +13,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres:13
+        image: postgres:15
         env:
           POSTGRES_USER: 'postgres'
           POSTGRES_HOST_AUTH_METHOD: 'trust'
@@ -35,47 +35,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # Use explicit include to pair each Moodle branch with its
-        # compatible PHP version and alternate databases across entries.
-        #
-        # Moodle/PHP compatibility (official):
-        #   Moodle 3.11: PHP 7.3 - 8.0
-        #   Moodle 4.0:  PHP 7.3 - 8.0
-        #   Moodle 4.1:  PHP 7.4 - 8.1
-        #   Moodle 4.2:  PHP 8.0 - 8.2
-        #   Moodle 4.3:  PHP 8.0 - 8.2
         include:
-          # Moodle 3.11 - oldest supported branch, lowest PHP.
-          - php: '7.4'
-            moodle-branch: 'MOODLE_311_STABLE'
-            database: pgsql
-
-          # Moodle 4.0 - test with MariaDB for DB coverage.
-          - php: '8.0'
-            moodle-branch: 'MOODLE_400_STABLE'
-            database: mariadb
-
-          # Moodle 4.1 LTS - critical long-term-support branch.
-          - php: '8.0'
-            moodle-branch: 'MOODLE_401_STABLE'
-            database: pgsql
-
           - php: '8.1'
-            moodle-branch: 'MOODLE_401_STABLE'
-            database: mariadb
-
-          # Moodle 4.2 - mid-range branch.
-          - php: '8.1'
-            moodle-branch: 'MOODLE_402_STABLE'
-            database: pgsql
-
-          # Moodle 4.3 - newest supported branch, highest PHP.
-          - php: '8.2'
-            moodle-branch: 'MOODLE_403_STABLE'
+            moodle-branch: 'MOODLE_405_STABLE'
             database: pgsql
 
           - php: '8.2'
-            moodle-branch: 'MOODLE_403_STABLE'
+            moodle-branch: 'MOODLE_405_STABLE'
             database: mariadb
 
     steps:
@@ -90,8 +56,6 @@ jobs:
           php-version: ${{ matrix.php }}
           extensions: pgsql, mysqli, zip, gd, xmlrpc, soap, intl
           ini-values: max_input_vars=5000
-          # Use 'none' unless you need code coverage reports.
-          # For coverage, use 'pcov' (Moodle 3.10+) or 'xdebug'.
           coverage: none
 
       - name: Initialise moodle-plugin-ci