Update Chromium/Safari versions for api.EventSource.url (#17362)
Update Chromium/Safari versions for api.EventSource.url (#17362)

This was added in WebKit trunk version 535.19:
https://github.com/WebKit/WebKit/commit/75f75ebe0d41d3f9fbb8e156f3dd5ced83067275
https://github.com/WebKit/WebKit/blob/75f75ebe0d41d3f9fbb8e156f3dd5ced83067275/Source/WebCore/Configurations/Version.xcconfig
mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data