Merge pull request #1076 from humanmade/backport-1075-to-v25-branch

[Backport v25-branch] Revert to monolog 2.x

Author: mikelittle

composer.json

@@ -38,7 +38,7 @@
 		"humanmade/batcache": "~1.5.2",
 		"humanmade/ludicrousdb": "~5.0.7",
 		"humanmade/aws-ses-wp-mail": "~1.3.1",
-		"monolog/monolog": "^3.9",
+		"monolog/monolog": "^2.9",
 		"maxbanton/cwh": "^2.0"
 	},
 	"extra": {