Release 2.7.0-beta4

Update changelog.json

Co-authored-by: Billy Griffin <5091167+billygriffin@users.noreply.github.com>

Bump version to 2.7.0-beta2 and update changelog

Release 2.7.0-beta1

Bump version to 2.6.7-beta1

Copy work from cherry pick branch to handle new dugite error

Update changelog.json

Co-authored-by: Billy Griffin <5091167+billygriffin@users.noreply.github.com>

Update changelog.json

Co-authored-by: Sergio Padrino <sergio.padrino@gmail.com>

Enable the new TCP-based trampoline for production

Bump version to 2.6.4-beta2 and update changelog