Deprecate CSP plugin-types directive (#9241)
Deprecate CSP plugin-types directive (#9241)

* Deprecate CSP plugin-types directive

https://github.com/w3c/webappsec-csp/commit/e9895ed
(https://github.com/w3c/webappsec-csp/issues/394) completely removed the
plugin-types directive from the CSP spec. So this patch marks it
deprecated:true and standard_track:false.

* Remove Firefox bug link for CSP plugin-types
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data