chore(deps): update postgres docker digest to be55fec (#29)

Co-authored-by: pactflow-renovate-bot[bot] <186667433+pactflow-renovate-bot[bot]@users.noreply.github.com>

Author: pactflow-renovate-bot[bot]

docker-compose.yml

@@ -18,7 +18,7 @@ services:
       PACT_BROKER_DATABASE_CONNECT_MAX_RETRIES: "10"
       PACT_BROKER_PUBLIC_HEARTBEAT: "true"
   postgres:
-    image: postgres@sha256:dc9fb7de9fc1a58f4ccba07cf4df9447856588f73ba9ba455eec9967fbd85b6d
+    image: postgres@sha256:be55fec1728a128ad034a7562115d227fa890fd8ca18d1364be326fbf7a0f8dd
     healthcheck:
       test: psql postgres --command "select 1" -U postgres
     ports: