chore(deps): update dependency krakjoe/apcu to v5.1.28

Signed-off-by: milkmaker <milkmaker@mailcow.de>

Author: renovate[bot]

data/Dockerfiles/phpfpm/Dockerfile

@@ -3,7 +3,7 @@ FROM php:8.2-fpm-alpine3.21
 LABEL maintainer = "The Infrastructure Company GmbH <info@servercow.de>"
 
 # renovate: datasource=github-tags depName=krakjoe/apcu versioning=semver-coerced extractVersion=^v(?<version>.*)$
-ARG APCU_PECL_VERSION=5.1.27
+ARG APCU_PECL_VERSION=5.1.28
 # renovate: datasource=github-tags depName=Imagick/imagick versioning=semver-coerced extractVersion=(?<version>.*)$
 ARG IMAGICK_PECL_VERSION=3.8.0
 # renovate: datasource=github-tags depName=php/pecl-mail-mailparse versioning=semver-coerced extractVersion=^v(?<version>.*)$