build(deps): bump tar from 6.2.0 to 6.2.1 in /backend (#7)

Bumps [tar](https://github.com/isaacs/node-tar) from 6.2.0 to 6.2.1.
- [Release notes](https://github.com/isaacs/node-tar/releases)
- [Changelog](https://github.com/isaacs/node-tar/blob/main/CHANGELOG.md)
- [Commits](https://github.com/isaacs/node-tar/compare/v6.2.0...v6.2.1)

---
updated-dependencies:
- dependency-name: tar
  dependency-type: indirect
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

backend/package-lock.json

@@ -3062,9 +3062,9 @@
       }
     },
     "node_modules/tar": {
-      "version": "6.2.0",
+      "version": "6.2.1",
-      "resolved": "https://registry.npmjs.org/tar/-/tar-6.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-6.2.1.tgz",
-      "integrity": "sha512-/Wo7DcT0u5HUV486xg675HtjNd3BXZ6xDbzsCUZPt5iw8bTQ63bP0Raut3mvro9u+CUyq7YQd8Cx55fsZXxqLQ==",
+      "integrity": "sha512-DZ4yORTwrbTj/7MZYq2w+/ZFdI6OZ/f9SFHR+71gIVUZhOQPHzVCLpvRnPgyaMpfWxxk/4ONva3GQSyNIKRv6A==",
       "dependencies": {
         "chownr": "^2.0.0",
         "fs-minipass": "^2.0.0",
@@ -5686,9 +5686,9 @@
       "integrity": "sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w=="
     },
     "tar": {
-      "version": "6.2.0",
+      "version": "6.2.1",
-      "resolved": "https://registry.npmjs.org/tar/-/tar-6.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-6.2.1.tgz",
-      "integrity": "sha512-/Wo7DcT0u5HUV486xg675HtjNd3BXZ6xDbzsCUZPt5iw8bTQ63bP0Raut3mvro9u+CUyq7YQd8Cx55fsZXxqLQ==",
+      "integrity": "sha512-DZ4yORTwrbTj/7MZYq2w+/ZFdI6OZ/f9SFHR+71gIVUZhOQPHzVCLpvRnPgyaMpfWxxk/4ONva3GQSyNIKRv6A==",
       "requires": {
         "chownr": "^2.0.0",
         "fs-minipass": "^2.0.0",