[snake14]

Description

Adds the shared release workflow from matomo-org/plugin-ci-workflows to 5.x-dev, run by hand. Running Weekly release on 5.x-dev from the Actions tab releases 5.2.1 (#350): it dates the entry, tags and publishes the release, and opens a pull request bringing the dated entry back to 5.x-dev.

Unlike the 6.x-dev caller, this one passes TESTS_ACCESS_TOKEN as the approver token, to try having that account approve and merge the date pull request on a protected branch.

Issue No

NA

Steps to Replicate the Issue

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Checklist

• [✖] Tested locally or on demo2/demo3?
• [NA] New test case added/updated?
• [NA] Are all newly added texts included via translation?
• [NA] Are text sanitized properly? (Eg use of v-text v/s v-html for vue)
• [NA] Version bumped?
• [✔] I have understood, reviewed, and tested all AI outputs before use
• [✔] All AI instructions respect security, IP, and privacy rules
• [NA] Documentation updated?