Bump favonia/cloudflare-ddns from 1.15.1 to 1.16.2 in /docker (#58)

Bumps favonia/cloudflare-ddns from 1.15.1 to 1.16.2.

---
updated-dependencies:
- dependency-name: favonia/cloudflare-ddns
  dependency-version: 1.16.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]

docker/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   cloudflare_ddns:
-    image: favonia/cloudflare-ddns:1.15.1
+    image: favonia/cloudflare-ddns:1.16.2
     container_name: cloudflare_ddns
     hostname: cloudflare_ddns
     restart: unless-stopped