Update logback monorepo to v1.5.20

This MR contains the following updates:

Package	Change	Age	Confidence
ch.qos.logback:logback-classic (source, changelog)	1.5.19 -> 1.5.20
ch.qos.logback:logback-core (source, changelog)	1.5.19 -> 1.5.20

---

⚠️ Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ Rebasing: Whenever MR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this MR and you won't be reminded about these updates again.

---

• If you want to rebase/retry this MR, check this box

---

This MR has been generated by Renovate Bot.