chore(all): update alpine Docker digest to 4b7ce07 (#55)

Signed-off-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docker/Dockerfile

@@ -59,7 +59,7 @@ RUN VERSION=$(git describe --tags 2>/dev/null || echo 'dev') && \
         -o faces faces.go
 
 # Exporting minimal docker image with pre-built binary.
-FROM alpine@sha256:4bcff63911fcb4448bd4fdacec207030997caf25e9bea4045fa6c8c44de311d1
+FROM alpine@sha256:4b7ce07002c69e8f3d704a9c5d6fd3053be500b7f1c69fc0d80990c2ad8dd412
 
 # Install runtime dependencies for the binary
 RUN apk add --no-cache ca-certificates