chore(deps-dev): bump @xterm/xterm from 5.5.0 to 6.0.0 (#2187)

Bumps [@xterm/xterm](https://github.com/xtermjs/xterm.js) from 5.5.0 to 6.0.0.
- [Release notes](https://github.com/xtermjs/xterm.js/releases)
- [Commits](xtermjs/xterm.js@5.5.0...6.0.0)

---
updated-dependencies:
- dependency-name: "@xterm/xterm"
  dependency-version: 6.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

packages/backend/package.json

@@ -114,7 +114,7 @@
     "@types/ssh2": "^1.15.5",
     "@xterm/addon-attach": "^0.11.0",
     "@xterm/addon-fit": "^0.10.0",
-    "@xterm/xterm": "^5.5.0",
+    "@xterm/xterm": "^6.0.0",
     "eslint": "^9.39.2",
     "eslint-import-resolver-custom-alias": "^1.3.2",
     "eslint-import-resolver-typescript": "^4.4.1",

packages/frontend/package.json

@@ -55,7 +55,7 @@
     "vite": "7.3.0",
     "vitest": "^4.0.10",
     "vitest-canvas-mock": "^0.3.3",
-    "@xterm/xterm": "^5.5.0",
+    "@xterm/xterm": "^6.0.0",
     "@xterm/addon-fit": "^0.10.0",
     "@xterm/addon-attach": "^0.11.0"
   }