Update toolbox 1.86.0 -> 1.87.0

## What's Changed

* Enable PHPSpec on PHP 8.2 and 8.3 by @jakzal in jakzal/toolbox#510

**Full Changelog**: jakzal/toolbox@v1.86.0...v1.87.0

Author: jakzal

Dockerfile

@@ -2,7 +2,7 @@
 
 ARG PHP_VERSION=8.4
 ARG TOOLBOX_EXCLUDED_TAGS="exclude-php:${PHP_VERSION}"
-ARG TOOLBOX_VERSION="1.86.0"
+ARG TOOLBOX_VERSION="1.87.0"
 ARG FLAVOUR="alpine"