chore(dev-dependency): update express

[rolandsusans]

chore(dev-dependency): update express

This pull request updates the express dependency in the package.json file to ensure compatibility with the latest features and security patches.

Dependency updates:

• package.json: Updated express from version ^4.19.2 to ^4.21.0.

[IlmariKu]

Yep, please merge this @scottie1984. There's 3 high security vulnerabilities with the express-dependency.

body-parser  <1.20.3
Severity: high
body-parser vulnerable to denial of service when url encoding is enabled - https://github.com/advisories/GHSA-qwcr-r2fm-qrc7

body-parser@1.20.2
node_modules/body-parser
  body-parser@"1.20.2" from express@4.19.2
  node_modules/express
    express@"^4.19.2" from the root project
    peer express@">=4.0.0 || >=5.0.0-beta" from swagger-ui-express@5.0.0
    node_modules/swagger-ui-express
      swagger-ui-express@"^5.0.0" from the root project

[Edwin-WB-Li]

Uncaught ReferenceError: SwaggerUIBundle is not defined at window.onload with SwaggerUI on typescript #339

Help fix this problem

[rawmind]

@scottie1984 could you push it to npm too? thanks!