SSO: Revised copy for flagging external collaborators (#46108)

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/19730969806

Upstream-Ref: Automattic/jetpack@2e02001

Author: mmtr

composer.json

@@ -6,7 +6,7 @@
 	"require": {
 		"php": ">=7.2",
 		"automattic/jetpack-assets": "^4.3.13",
-		"automattic/jetpack-connection": "^6.19.8",
+		"automattic/jetpack-connection": "^6.19.9-alpha",
 		"automattic/jetpack-constants": "^3.0.8",
 		"automattic/jetpack-device-detection": "^3.3.0",
 		"automattic/block-delimiter": "^0.3.4"