docs: fix version history and release 1.12.3

Signed-off-by: Lizan Zhou <lizan@tetrate.io>

docs: final docs for 1.13.0 (envoyproxy#9745)

Including reorganizing the configuration overview page.

Signed-off-by: Matt Klein <mklein@lyft.com>

docs: fix version history

Signed-off-by: Matt Klein <mklein@lyft.com>

docs: 1.12.1 release note

Signed-off-by: Lizan Zhou <lizan@tetrate.io>

release: bumping versions (envoyproxy#8824)

Signed-off-by: Alyssa Wilk <alyssar@chromium.org>

Fix version_history.rst format issue.

Signed-off-by: Harvey Tuch <htuch@google.com>

release: bump to 1.11.1. (#21)

Signed-off-by: Piotr Sikora <piotrsikora@google.com>

release: bump to 1.11.0 (envoyproxy#7538)

Risk Level: n/a
Testing: n/a
Docs Changes: 1.11!
Release Notes: 1.11!

Signed-off-by: Alyssa Wilk <alyssar@chromium.org>

release: bump to 1.10.0 (envoyproxy#6489)

Signed-off-by: Matt Klein <mklein@lyft.com>