Bump bcrypt from 5.1.0 to 5.1.1 in /backend

Bumps [bcrypt](https://github.com/kelektiv/node.bcrypt.js) from 5.1.0 to 5.1.1.
- [Release notes](https://github.com/kelektiv/node.bcrypt.js/releases)
- [Changelog](https://github.com/kelektiv/node.bcrypt.js/blob/master/CHANGELOG.md)
- [Commits](kelektiv/node.bcrypt.js@v5.1.0...v5.1.1)

---
updated-dependencies:
- dependency-name: bcrypt
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

backend/package-lock.json

@@ -22,7 +22,7 @@
   "author": "Glaucia Lemos <Twitter: @glaucia_lemos86>",
   "license": "MIT",
   "dependencies": {
-    "bcrypt": "^5.1.0",
+    "bcrypt": "^5.1.1",
     "bcryptjs": "^2.4.3",
     "cors": "^2.8.5",
     "dotenv": "^16.3.1",