ci: update ghcr.io/renovatebot/renovate docker tag to v37.278.0

[sebastien-prudhomme]

This PR contains the following updates:

Package	Update	Change
ghcr.io/renovatebot/renovate (source)	minor	37.273.0 -> 37.278.0

---

Release Notes

renovatebot/renovate (ghcr.io/renovatebot/renovate)

v37.278.0

Compare Source

Features

• manager/pip-compile: Allow security updates for transitive dependencies (#​27561) (0df4ff5)

v37.277.0

Compare Source

Features

• update labels when config changes (#​25340) (f889079)

v37.276.0

Compare Source

Features

• manager/pip-compile: Support -r dependencies between files (#​28052) (f9ba846)

v37.275.0

Compare Source

Features

• vendir: add support for github releases (#​28175) (e998c65)

Miscellaneous Chores

• deps: update dependency tar to v6.2.1 (#​28179) (673c047)

v37.274.0

Compare Source

Features

• add support for git refs for vendir (#​28084) (a8208df)

Documentation

• development: clarify logging principles (#​28162) (a567774)

Miscellaneous Chores

• remove types.ts from vendir as it is unused (#​28166) (c74a499)

Tests

• vendir: refactor fixtures (#​28165) (a6f90f2)

---

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 PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

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

---

This PR has been generated by Renovate Bot.