deps: update nghttp2 to 1.68.1

[nodejs-github-bot]

This is an automated update of nghttp2 to 1.68.1.

[nodejs-github-bot]

Review requested:

• @nodejs/http2
• @nodejs/net
• @nodejs/security-wg

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/72307/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/72318/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/72325/

[trivikr]

This requires reverting a change was causes CI failures

Example revert in previous PR: 1ab2794

[mcollina]

@trivikr I'm lost.

[trivikr]

The commit nghttp2/nghttp2@7784fa9 published in nghttp@1.67.0 have been breaking CI tests in Node.js

Antoine documented it in #60661, and we've been reverting that commit when upgrading nghttp2.
An example revert from previous PR 1ab2794

[pimterry]

I'm going to look into the upstream nghttp2 issue here and see if I can find a proper solution, watch this space.

EDIT: See nghttp2/nghttp2#2604 (comment)

[mcollina]

Unless those can be fixed/reverted upstream, we would have to update the test.

[Kangie]

The commit nghttp2/nghttp2@7784fa9 published in nghttp@1.67.0 have been breaking CI tests in Node.js

Antoine documented it in #60661, and we've been reverting that commit when upgrading nghttp2. An example revert from previous PR 1ab2794

This is unreasonable on downstreams using unbundled nghttp2. Please just fix the code here - your tests are failing for a reason.