build(deps): bump ubi9/ubi-micro in /packaging/docker (elastic#17651)

Bumps ubi9/ubi-micro from `ef76ed2` to `233cce2`.

---
updated-dependencies:
- dependency-name: ubi9/ubi-micro
  dependency-version: latest
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

packaging/docker/Dockerfile

@@ -30,7 +30,7 @@ FROM cgr.dev/chainguard/static:latest@sha256:092aad9f6448695b6e20333a8faa93fe363
 # Build stage 1
 # Copy prepared files from the previous stage and complete the image.
 ################################################################################
-FROM registry.access.redhat.com/ubi9/ubi-micro:latest@sha256:ef76ed20e66a9b19ccbbafe5657d73246c78c8f06ef3161e0fce6831ed4f7352
+FROM registry.access.redhat.com/ubi9/ubi-micro:latest@sha256:233cce2df15dc7cd790f7f1ddbba5d4f59f31677c13a47703db3c2ca2fea67b6
 ARG TARGETARCH
 ARG BUILD_DATE
 ARG VERSION