update CHANGELOG.md

release v2.11.0

update CHANGELOG.md

Only ignore on HCL, not JSON

Merge pull request hashicorp#466 from hashicorp/unused-backport

Backport unused key tracking from main to the Vault fork branch

update CHANGELOG.md

update CHANGELOG.md

Fix merge

An incompatibility between hashicorp#440 and hashicorp#438 was not caught until after
merging both to the main branch.