This adds support for retrieving credentials via the instance metadata
server v2 (IMDSv2).

Closes https://gitlab.com/gitlab-org/gitlab/-/issues/287816

List of changes:
https://github.com/fog/fog-aws/blob/master/CHANGELOG.md

Diff:
https://github.com/fog/fog-aws/compare/v3.5.2..v3.6.7