Bump ubuntu from 80dd3c3 to 7229784 in /images/toolbox

Bumps ubuntu from `80dd3c3` to `7229784`.

---
updated-dependencies:
- dependency-name: ubuntu
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

images/toolbox/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM ubuntu:24.04@sha256:80dd3c3b9c6cecb9f1667e9290b3bc61b78c2678c02cbdae5f0fea92cc6734ab
+FROM ubuntu:24.04@sha256:72297848456d5d37d1262630108ab308d3e9ec7ed1c3286a32fe09856619a782
 
 LABEL maintainer="Antrea <projectantrea-dev@googlegroups.com>"
 LABEL description="A Docker image with useful tools (for networking) based on Ubuntu"