chore(deps-dev): Bump xterm from 4.17.0 to 4.19.0

Bumps [xterm](https://github.com/xtermjs/xterm.js) from 4.17.0 to 4.19.0.
- [Release notes](https://github.com/xtermjs/xterm.js/releases)
- [Commits](https://github.com/xtermjs/xterm.js/compare/4.17.0...4.19.0)

---
updated-dependencies:
- dependency-name: xterm
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

packages/core/package.json

@@ -315,7 +315,7 @@
     "webpack-cli": "^4.9.2",
     "webpack-dev-server": "^4.13.3",
     "webpack-node-externals": "^3.0.0",
-    "xterm": "4.17.0",
+    "xterm": "4.19.0",
     "xterm-addon-fit": "^0.5.0"
   },
   "peerDependencies": {