openSUSE Leap 16.0 Security Alert on elemental-system-agent CVE-2026-33186

This update for elemental-system-agent fixes the following issue

- CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2: path pseudo-

header (bsc#1260277).

Changes:

- Update to version 0.3.16:

* setup for immutable releases (#274)

* align system-agent image publishing for signed releases (#270)

* Bumo github.com/docker/cli to v29.2.0 and go.opentelemetry.io/otel to v1.43.0

* run go mod tidy in /test folder

* Bump google.golang.org/grpc from 1.75.0 to 1.79.3 (bsc#1260277 CVE-2026-33186)

* Bump github.com/docker/cli in /test

* export CATTLE_NODE_NAME if SYSTEM_UPGRADE_NODE_NAME is set

* use correct prefix for system-agent binary (#273)

* checksum validation (#271)

* Add `validate` subcommand for configuration validation (#250)

* Update CODEOWNERS

* Pin GH Actions to commit sha

* chore: bump sles to 15.7

* Extend remote plan e2e tests

* Fix agent restart issue and introduce constants

* chore: bump go to v1.25

* Setup...