update containerd binary to v1.7.9

full diff: https://github.com/containerd/containerd/compare/v1.7.8...v1.7.9
release notes: https://github.com/containerd/containerd/releases/tag/v1.7.9

Notable Updates

- update runc binary to v1.1.10
- vendor: upgrade OpenTelemetry to v1.19.0 / v0.45.0
- Expose usage of cri-api v1alpha2
- integration: deflake TestIssue9103
- fix: shimv1 leak issue
- cri: add deprecation warnings for mirrors, auths, and configs
- Update hcsshim tag to v0.11.4
- Expose usage of deprecated features

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 68e73ceb67)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

hack/dockerfile/install/containerd.installer

@@ -15,7 +15,7 @@ set -e
 # the binary version you may also need to update the vendor version to pick up
 # bug fixes or new APIs, however, usually the Go packages are built from a
 # commit from the master branch.
-: "${CONTAINERD_VERSION:=v1.7.8}"
+: "${CONTAINERD_VERSION:=v1.7.9}"
 
 install_containerd() (
 	echo "Install containerd version $CONTAINERD_VERSION"