repo: Release `1.22.4` (envoyproxy#22450)

Signed-off-by: Ryan Northey <ryan@synca.io>

repo: Release `1.22.3` (envoyproxy#22389)

Signed-off-by: Ryan Northey <ryan@synca.io>

ci: Add cleanup script to azp config (envoyproxy#22410)

Signed-off-by: Ryan Northey <ryan@synca.io>

[backport/v1.20] repo: Release `1.20.7` (envoyproxy#22352)

repo: Release `1.20.7`

Signed-off-by: Ryan Northey <ryan@synca.io>

repo: Release `1.23.0` (envoyproxy#22227)

Signed-off-by: Adi Suissa-Peleg <adip@google.com>

[backport/1.20] release: Fix diskspace issue (1.20.6) (envoyproxy#21832)

release: Fix diskspace issue (1.20.6)

Signed-off-by: Ryan Northey <ryan@synca.io>

release: v1.20.5

Signed-off-by: Ryan Northey <ryan@synca.io>

release: v1.21.4

Signed-off-by: Ryan Northey <ryan@synca.io>

release: v1.22.2

Signed-off-by: Ryan Northey <ryan@synca.io>

Prepare Release.

Signed-off-by: Pradeep Rao <pcrao@google.com>