Merge pull request #28 from alphagov/dependabot/docker/alpine-b89d9c9

Bump alpine from `77726ef` to `b89d9c9`

Dockerfile

@@ -14,7 +14,7 @@ RUN make compile
 
 RUN cp /opt/code/bin/* /opt/resource/
 
-FROM alpine:3.20@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd
+FROM alpine:3.20@sha256:b89d9c93e9ed3597455c90a0b88a8bbb5cb7188438f70953fede212a0c4394e0
 RUN apk upgrade --no-cache \
   && apk add --no-cache ca-certificates
 COPY --from=builder /opt/resource /opt/resource/