fix(deps): update dependency ripple-lib to v1.9.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ripple-lib	1.9.3 -> 1.9.4

---

Release Notes

ripple/ripple-lib

### [`v1.9.4`](https://togithub.com/ripple/ripple-lib/blob/master/HISTORY.md#​194-2021-04-18) [Compare Source](https://togithub.com/ripple/ripple-lib/compare/1.9.3...1.9.4) - Add memos support for all transaction types for getTransactions ([#​1353](https://togithub.com/ripple/ripple-lib/issues/1353), [#​1397](https://togithub.com/ripple/ripple-lib/issues/1397)) - Add Deno and React instructions ([#​1387](https://togithub.com/ripple/ripple-lib/issues/1387)) The SHA-256 checksums for the browser version of this release can be found below. % shasum -a 256 build/* daa2b892a18037e89fea6fcf7de67624a782971956cb8df17cd765a4b0201ee9 build/ripple-latest-min.js fc17a5572001d814ea6b81aa701fcb66882ec031c68afb769a8ea8b71c6529a6 build/ripple-latest-min.js.LICENSE.txt b1d0bab54c6dbc76091610ede54a4269e73dea8cc6a9c25738d62bd7671920e4 build/ripple-latest.js

---

Configuration

:date: Schedule: At any time (no schedule defined).

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

:recycle: Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:no_bell: 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 WhiteSource Renovate. View repository job log here.