* Docs: adds SAML and Octa to What's new in 7.0

* Update docs/sources/guides/whats-new-in-v7-0.md

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>

* Update docs/sources/guides/whats-new-in-v7-0.md

Co-authored-by: Agnès Toulet <35176601+AgnesToulet@users.noreply.github.com>

* Docs: review fixes

* Docs: review feedback

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>
Co-authored-by: Agnès Toulet <35176601+AgnesToulet@users.noreply.github.com>