Changelog and readme.txt edits.

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/31812520945

Upstream-Ref: Automattic/jetpack@1f4a8d7

Author: LiamSarsfield

composer.json

@@ -6,7 +6,7 @@
 	"require": {
 		"php": ">=7.2",
 		"automattic/jetpack-assets": "^4.4.10",
-		"automattic/jetpack-connection": "^8.10.3-alpha",
+		"automattic/jetpack-connection": "^8.10.3",
 		"automattic/jetpack-constants": "^3.0.12",
 		"automattic/jetpack-external-connections": "^0.1.39",
 		"automattic/jetpack-status": "^6.3.1"