[codex] Install autopoint in release Linux jobs

[adamziel]

What it does

Adds autopoint to the explicit Linux package list in Release: verify and Release: publish.

Rationale

After the HTTPS/retry apt hardening, the ARM64 Linux release job got past the initial toolchain install. It then failed when static-php-cli doctor tried to auto-install autopoint itself, outside our retry-wrapped apt command:

autopoint not installed on your system
sudo apt-get install -y autopoint
E: Failed to fetch https://ports.ubuntu.com/.../autopoint_0.21-14ubuntu2_all.deb

Installing autopoint up front keeps all package fetching inside the hardened apt step.

Implementation

Updates only .github/workflows/release-publish.yml and .github/workflows/release-verify.yml.

Testing instructions

Verified by rerunning Release: publish for the existing v0.1.50 release commit after merge.