Bump alpine from 3.15.1 to 3.15.2 (#1130)

Bumps alpine from 3.15.1 to 3.15.2.

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Dockerfile

@@ -9,7 +9,7 @@ COPY internal/ internal/
 ARG KUBEBENCH_VERSION
 RUN make build && cp kube-bench /go/bin/kube-bench
 
-FROM alpine:3.15.1 AS run
+FROM alpine:3.15.2 AS run
 WORKDIR /opt/kube-bench/
 # add GNU ps for -C, -o cmd, and --no-headers support
 # https://github.com/aquasecurity/kube-bench/issues/109