PHP 8.5: Enable CI tests (#45771)

Co-authored-by: Brad Jorsch <anomiex@users.noreply.github.com>

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/19137603080

Upstream-Ref: Automattic/jetpack@93ad698

Author: tbradsha

composer.json

@@ -14,7 +14,7 @@
 		"phpunit/phpunit": "*"
 	},
 	"require-dev": {
-		"automattic/jetpack-changelogger": "^6.0.7",
+		"automattic/jetpack-changelogger": "^6.0.8-alpha",
 		"yoast/phpunit-polyfills": "^4.0.0",
 		"antecedent/patchwork": "^2.2"
 	},