fix(deps): update dependency conf to v15

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
conf	^14.0.0 → ^15.0.0

---

Release Notes

sindresorhus/conf (conf)

v15.1.0

Compare Source

• Add encryptionAlgorithm option ee03ae8

---

v15.0.2

Compare Source

• Fix build 6287608

---

v15.0.1

Compare Source

• Fix handling of legacy decryption (#​204) ce28bd6

---

v15.0.0

Compare Source

There are no known breaking changes, but it's a major release since it contains a large refactor, and that introduces risk.

• Add .appendToArray() method a1dbf86
• Fix constructor validation preventing migrations from fixing invalid schema data a1b43e6
• Fix clear() method to emit single change event 9b83a9d
• Fix store setter to preserve internal migration data ceefe13

---

---

Configuration

📅 Schedule: (UTC)

• 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 was generated by Mend Renovate. View the repository job log.