no php7.4 support anymore

Author: bluetom

.github/workflows/config.json

@@ -2,7 +2,7 @@
   "main-moodle": "MOODLE_405_STABLE",
   "main-php": "8.3",
   "moodle-php": {
-    "MOODLE_401_STABLE": ["7.4", "8.1"],
+    "MOODLE_401_STABLE": ["8.0", "8.1"],
     "MOODLE_402_STABLE": ["8.1", "8.2"],
     "MOODLE_403_STABLE": ["8.1", "8.2"],
     "MOODLE_404_STABLE": ["8.2", "8.3"],