Update public.ecr.aws/docker/library/composer Docker tag to v2.8.0

This MR contains the following updates:

Package	Type	Update	Change
public.ecr.aws/docker/library/composer (source)	stage	minor	2.7.9 -> 2.8.0

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Dockerfile

@@ -4,7 +4,7 @@ COPY . ./
 RUN yarn install --frozen-lockfile && \
     yarn build
 
-FROM --platform=$BUILDPLATFORM public.ecr.aws/docker/library/composer:2.7.9@sha256:cb3483dc851665462a66c59982577dfbbde0ae2059e8b5550c2f49f44b8c333e AS buildPHP
+FROM --platform=$BUILDPLATFORM public.ecr.aws/docker/library/composer:2.8.0@sha256:6d10482e0f84b4489c5c4d0775372bda2764d74f9ac4dfd3bb0ba9efeb0f3c52 AS buildPHP
 WORKDIR /app
 COPY . ./
 RUN composer install --no-cache --no-interaction --prefer-dist --ignore-platform-reqs --optimize-autoloader