Bump tar and bcrypt in /src/server

Removes [tar](https://github.com/isaacs/node-tar). It's no longer used after updating ancestor dependency [bcrypt](https://github.com/kelektiv/node.bcrypt.js). These dependencies need to be updated together.


Removes `tar`

Updates `bcrypt` from 5.1.1 to 6.0.0
- [Release notes](https://github.com/kelektiv/node.bcrypt.js/releases)
- [Changelog](https://github.com/kelektiv/node.bcrypt.js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kelektiv/node.bcrypt.js/compare/v5.1.1...v6.0.0)

---
updated-dependencies:
- dependency-name: tar
  dependency-version: 
  dependency-type: indirect
- dependency-name: bcrypt
  dependency-version: 6.0.0
  dependency-type: direct:production
...

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

src/server/package.json

@@ -9,7 +9,7 @@
     "dependencies": {
         "@pdfme/generator": "^5.3.15",
         "axios": "^1.8.4",
-        "bcrypt": "^5.1.1",
+        "bcrypt": "^6.0.0",
         "body-parser": "^1.20.3",
         "crypto-js": "^4.2.0",
         "express": "^4.21.2",