Update Safari data for http.headers.Content-Security-Policy.report-to (…

…mdn#21561)

This PR updates and corrects version values for Safari (Desktop and iOS/iPadOS) for the `report-to` member of the `Content-Security-Policy` HTTP header. The data comes from a commit in the browser's source code, mapped to a version number using available tooling or via the commit timestamp.

Commit: WebKit/WebKit@42f5a93

Additional Notes: This fixes mdn#18442.

http/headers/Content-Security-Policy.json

@@ -856,7 +856,7 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "16.4"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",