chore(deps): update composer:latest docker digest to 7384cf9 (#224)

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

Author: renovate[bot]

Dockerfile

@@ -5,7 +5,7 @@ LABEL org.opencontainers.image.description="php-docker-api-client app syncs you
 LABEL org.opencontainers.image.licenses=MIT
 ENV COMPOSER_ALLOW_SUPERUSER=1
 
-COPY --from=composer:latest@sha256:5248900ab8b5f7f880c2d62180e40960cd87f60149ec9a1abfd62ac72a02577c /usr/bin/composer /usr/local/bin/composer
+COPY --from=composer:latest@sha256:7384cf9fa70b710af02c9f40bec6e44472e07138efa5ab3428a058087c0d2724 /usr/bin/composer /usr/local/bin/composer
 
 WORKDIR /app
 COPY --link . /app