Bump the npm group with 3 updates

Bumps the npm group with 3 updates: [express](https://github.com/expressjs/express), [get-port](https://github.com/sindresorhus/get-port) and [grunt-nw-builder](https://github.com/nwjs/grunt-nw-builder).


Updates `express` from 4.18.3 to 4.19.1
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@4.18.3...4.19.1)

Updates `get-port` from 7.0.0 to 7.1.0
- [Release notes](https://github.com/sindresorhus/get-port/releases)
- [Commits](sindresorhus/get-port@v7.0.0...v7.1.0)

Updates `grunt-nw-builder` from 4.0.1 to 4.6.1
- [Release notes](https://github.com/nwjs/grunt-nw-builder/releases)
- [Commits](https://github.com/nwjs/grunt-nw-builder/commits/v4.6.1)

---
updated-dependencies:
- dependency-name: express
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: npm
- dependency-name: get-port
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: npm
- dependency-name: grunt-nw-builder
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: npm
...

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