Bump alpine from 3.18.2 to 3.18.4 (#415)

Bumps alpine from 3.18.2 to 3.18.4.

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

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

Author: dependabot[bot]

Dockerfile

@@ -6,7 +6,7 @@ WORKDIR /build
 ADD . /build
 RUN make BUILD_VERSION=${VERSION}
 
-FROM alpine:3.18.2@sha256:82d1e9d7ed48a7523bdebc18cf6290bdb97b82302a8a9c27d4fe885949ea94d1 AS runner
+FROM alpine:3.18.4@sha256:eece025e432126ce23f223450a0326fbebde39cdf496a85d8c016293fc851978 AS runner
 LABEL org.opencontainers.image.source="https://github.com/DataDog/stratus-red-team/"
 COPY --from=builder /build/bin/stratus /stratus
 RUN apk add --update git # git is needed for Terraform to download external modules at runtime