Add two more CVEs for chromium (CVE-2019-582{5,6})

https://chromereleases.googleblog.com/2019/04/stable-channel-update-for-desktop_30.html

Those issues seem to have been fixed earlier than 4.0.3729.131 already
but no information given in which version exactly they were ommited from
the release notes:

	The following bugs were fixed in previous Chrome releases, but were
	mistakenly omitted from the release notes at the time:
	[...]
		[941743] High CVE-2019-5825: Out-of-bounds write in V8
		[941746] High CVE-2019-5826: Use-after-free in IndexedDB