Build new bin-builder Docker image with PHP 8.5 support

[igancev]

Description

Build a new version of the base Docker image ghcr.io/igancev/work-reporter-builder/bin-builder with PHP 8.5 support. This image is maintained in a separate repository and provides static-php-cli and build tools used by the Linux binary build pipeline.

What to do

• Update the Dockerfile in the work-reporter-builder repository to use PHP 8.5
• Rebuild static-php-cli micro.sfx with PHP 8.5
• Tag and publish the new image (e.g., bin-builder:0.1.0)
• Verify the image works by building the work-reporter binary locally

Definition of Done

New image published to GHCR with PHP 8.5. Local docker build of work-reporter produces a working binary.

Blocked by: none

Branch strategy: this task is done in the work-reporter-builder repository, not here. No PR needed in this repo.