deps: update V8 to 5.8
This is the usual semver-major update for master
. It should not land on v8.x (which will need the patch for V8 6.0 compatibility).
/cc @nodejs/v8
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
commit message follows commit guidelines
CI: https://ci.nodejs.org/job/node-test-pull-request/7792/ V8 CI: https://ci.nodejs.org/job/node-test-commit-v8-linux/676/