Javascript dependency: Bump xterm from 4.19.0 to 5.3.0 in /web

Bumps [xterm](https://github.com/xtermjs/xterm.js) from 4.19.0 to 5.3.0.
- [Release notes](https://github.com/xtermjs/xterm.js/releases)
- [Commits](https://github.com/xtermjs/xterm.js/compare/4.19.0...5.3.0)

---
updated-dependencies:
- dependency-name: xterm
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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web/package.json

@@ -149,7 +149,7 @@
     "uplot-react": "^1.1.4",
     "valid-filename": "^2.0.1",
     "wkx": "^0.5.0",
-    "xterm": "^4.11.0",
+    "xterm": "^5.3.0",
     "xterm-addon-fit": "^0.5.0",
     "xterm-addon-search": "^0.8.0",
     "xterm-addon-web-links": "^0.4.0",