Bump @trycourier/courier from 5.7.0 to 6.0.1 in /server

Bumps [@trycourier/courier](https://github.com/trycourier/courier-node) from 5.7.0 to 6.0.1.
- [Release notes](https://github.com/trycourier/courier-node/releases)
- [Changelog](https://github.com/trycourier/courier-node/blob/master/CHANGELOG.md)
- [Commits](trycourier/courier-node@v5.7.0...v6.0.1)

---
updated-dependencies:
- dependency-name: "@trycourier/courier"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

server/package.json

@@ -1,6 +1,6 @@
 {
 	"dependencies": {
-		"@trycourier/courier": "^5.7.0",
+		"@trycourier/courier": "^6.0.1",
 		"bcrypt": "^5.1.0",
 		"body-parser": "^1.20.2",
 		"caniuse-lite": "^1.0.30001565",