Bump bci/bci-micro from 15.6 to 15.7

Bumps bci/bci-micro from 15.6 to 15.7.

---
updated-dependencies:
- dependency-name: bci/bci-micro
  dependency-version: '15.7'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Dockerfile

@@ -26,7 +26,7 @@ ARG TARGETARCH
 ARG LDFLAGS
 RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go
 
-FROM registry.suse.com/bci/bci-micro:15.6
+FROM registry.suse.com/bci/bci-micro:15.7
 WORKDIR /
 COPY --from=builder /workspace/manager .
 USER 65532:65532