Update cspvalidator.org to salvation 2.7.2

[Subtletree]

Currently is running 2.6.0 and doesn't handle the newer directives

[kingthorin]

Should now be 2.7.2?

[kingthorin]

3.x now 😀

[lazysoundsystem]

I know this is an old issue, but could someone confirm that cspvalidator.org is using v3 now? On the site it says it's still on 2.6

and it's not recognizing script-src-attr

which was included 5 years ago #216