Bump jest and ts-jest (#40)

Bumps [jest](https://github.com/facebook/jest) and [ts-jest](https://github.com/kulshekhar/ts-jest). These dependencies needed to be updated together.

Updates `jest` from 24.9.0 to 25.1.0
- [Release notes](https://github.com/facebook/jest/releases)
- [Changelog](https://github.com/facebook/jest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/jest/compare/v24.9.0...v25.1.0)

Updates `ts-jest` from 24.3.0 to 25.0.0
- [Release notes](https://github.com/kulshekhar/ts-jest/releases)
- [Changelog](https://github.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kulshekhar/ts-jest/compare/v24.3.0...v25.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

packages/ripple-address-codec/package.json

@@ -27,8 +27,8 @@
   "devDependencies": {
     "@types/jest": "^24.0.18",
     "@types/node": "^13.1.8",
-    "jest": "^24.9.0",
-    "ts-jest": "^24.1.0",
+    "jest": "^25.1.0",
+    "ts-jest": "^25.0.0",
     "tslint": "^5.19.0",
     "tslint-eslint-rules": "^5.4.0",
     "typescript": "^3.7.4"