Bump buildkite/agent-base

Bumps the container-images group with 1 update in the /packaging/docker/ubuntu-22.04 directory: buildkite/agent-base.


Updates `buildkite/agent-base` from `e46604b` to `2520343`

---
updated-dependencies:
- dependency-name: buildkite/agent-base
  dependency-type: direct:production
  dependency-group: container-images
...

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

packaging/docker/ubuntu-22.04/Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1.4
 
-FROM public.ecr.aws/buildkite/agent-base:ubuntu-jammy@sha256:e46604b2a8bddb990eb5bf93b835be543a0f61bec188567422ebb050a0ebfa15
+FROM public.ecr.aws/buildkite/agent-base:ubuntu-jammy@sha256:2520343ecd0166fad66b206cb3b423425e51c8c21e6f10957aaa0f099a2fe8e6
 ARG TARGETOS
 ARG TARGETARCH