chore(deps): bump ubi9/ubi from `c8df11b` to `b8923f5` (#5939)

Bumps ubi9/ubi from `c8df11b` to `b8923f5`.

---
updated-dependencies:
- dependency-name: ubi9/ubi
  dependency-version: b8923f58ef6aebe2b8f543f8f6c5af15c6f9aeeef34ba332f33bf7610012de0c
  dependency-type: direct:production
...

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

Dockerfile.ubi

@@ -1,4 +1,4 @@
-FROM registry.access.redhat.com/ubi9/ubi@sha256:c8df11b65b18fcf384d5b7fa53e2a92f381a2d9ad78b9de41dc6f2aa161a0e04 AS minimal-ubi
+FROM registry.access.redhat.com/ubi9/ubi@sha256:b8923f58ef6aebe2b8f543f8f6c5af15c6f9aeeef34ba332f33bf7610012de0c AS minimal-ubi
 
 # Add metadata
 LABEL maintainer="cncf-externalsecretsop-maintainers@lists.cncf.io" \