Update dependency openbao to v2.6.2-gitlab2

This MR contains the following updates:

Package	Update	Change
openbao	patch	v2.6.2-gitlab1 → v2.6.2-gitlab2

What changes

• Adds a patch that fixes a bug - https://gitlab.com/gitlab-org/govern/secrets-management/openbao-internal/-/blob/main/patches/upstream/0002-skip-namespace-resolution-for-exempt-paths.patch?ref_type=heads

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Release Notes

gitlab-org/govern/secrets-management/openbao-internal (openbao)

v2.6.2-gitlab2

Compare Source

Fix sys/health and other rate-limit exempt paths hanging during HA promotion by skipping namespace resolution for them.

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