chore(main): release 3.1.0

[pplx-oss]

🤖 I have created a release beep boop

3.1.0 (2026-09-14)

What's Changed

• test: prototype declared Chromium execution with actiond by @longlho in test: prototype declared Chromium execution with actiond #27
• feat: run VRT with declared Linux browser inputs by @longlho in feat: run VRT with declared Linux browser inputs #28
• feat: replace Testcontainers with actiond for VRT by @longlho in feat: replace Testcontainers with actiond for VRT #29
• feat: run VRT without actiond rootfs mappings by @longlho in feat: run VRT without actiond rootfs mappings #31
• docs: remove obsolete actiond rootfs proposal references by @longlho in docs: remove obsolete actiond rootfs proposal references #32
• feat: replace OCI with public Chromium runtime helpers by @longlho in feat: replace OCI with public Chromium runtime helpers #35
• feat: support hermetic E2E and component tests by @longlho in feat: support hermetic E2E and component tests #36
• fix: support Node 26 runtimes and preserve VRT JUnit by @longlho in fix: support Node 26 runtimes and preserve VRT JUnit #37

Full Changelog: v3.0.0...v3.1.0

---

This PR was generated with Release Please. See documentation.

[pplx-oss]

🤖 Created releases:

• v3.1.0

🌻