chore(deps): update alpine:3 docker digest to a8560b3

Author: renovate[bot]

cmd/ssl-game-controller/Dockerfile

@@ -12,7 +12,7 @@ COPY --from=build_node frontend/dist frontend/dist
 RUN go install ./cmd/${cmd}
 
 # Start fresh from a smaller image
-FROM alpine:3@sha256:56fa17d2a7e7f168a043a2712e63aed1f8543aeafdcee47c58dcffe38ed51099
+FROM alpine:3@sha256:a8560b36e8b8210634f77d9f7f9efd7ffa463e380b75e2e74aff4511df3ef88c
 ARG cmd=ssl-game-controller
 COPY --from=build_go /go/bin/${cmd} /app
 RUN mkdir -p /config && chown -R 1000: /config

cmd/ssl-ref-client/Dockerfile

@@ -5,7 +5,7 @@ COPY . .
 RUN go install -v ./cmd/${cmd}
 
 # Start fresh from a smaller image
-FROM alpine:3@sha256:56fa17d2a7e7f168a043a2712e63aed1f8543aeafdcee47c58dcffe38ed51099
+FROM alpine:3@sha256:a8560b36e8b8210634f77d9f7f9efd7ffa463e380b75e2e74aff4511df3ef88c
 ARG cmd=ssl-ref-client
 COPY --from=build_go /go/bin/${cmd} /app
 USER 1000