build(deps-dev): bump express

Bumps [express](https://github.com/expressjs/express) from 4.18.2 to 4.19.2.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@4.18.2...4.19.2)

---
updated-dependencies:
- dependency-name: express
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

packages/cactus-test-plugin-keychain-memory/package.json

@@ -55,7 +55,7 @@
     "@hyperledger/cactus-core": "2.0.0-alpha.2",
     "@hyperledger/cactus-core-api": "2.0.0-alpha.2",
     "@hyperledger/cactus-plugin-keychain-memory": "2.0.0-alpha.2",
-    "express": "4.18.2",
+    "express": "4.19.2",
     "uuid": "9.0.1"
   },
   "engines": {