chore(deps): update composer/composer docker tag to v2.8.6 (#839)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [composer/composer](https://redirect.github.com/composer/docker) |
final | patch | `2.8.5-bin` -> `2.8.6-bin` |

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local/Dockerfile

@@ -1,6 +1,6 @@
 FROM php:8.2.18-cli-alpine as base
 
-COPY --from=composer/composer:2.8.5-bin /composer /usr/bin/composer
+COPY --from=composer/composer:2.8.6-bin /composer /usr/bin/composer
 
 RUN apk add --no-cache git openssh \
     && mkdir -p -m 0600 ~/.ssh && ssh-keyscan github.com >> ~/.ssh/known_hosts