Don't support monolog v2.x (#7714)

Author: limingxinleo

composer.json

@@ -20,9 +20,9 @@
         "hyperf/contract": "~3.2.0",
         "hyperf/coroutine": "~3.2.0",
         "hyperf/support": "~3.2.0",
-        "monolog/monolog": "^2.7 || ^3.1",
+        "monolog/monolog": "^3.1",
         "psr/container": "^1.0 || ^2.0",
-        "psr/log": "^1.0 || ^2.0 || ^3.0"
+        "psr/log": "^2.0 || ^3.0"
     },
     "autoload": {
         "psr-4": {