build(deps-dev): bump ts-jest from 25.5.1 to 26.4.4 (#41)

Bumps [ts-jest](https://github.com/kulshekhar/ts-jest) from 25.5.1 to 26.4.4.
- [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/v25.5.1...v26.4.4)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

packages/bridge/package.json

@@ -39,7 +39,7 @@
     "@babel/preset-typescript": "^7.6.0",
     "@types/jest": "^24.9.0",
     "jest": "^24.9.0",
-    "ts-jest": "^25.4.0"
+    "ts-jest": "^26.4.4"
   },
   "directories": {
     "lib": "lib"