fix(deps): update dependency xterm to v4.18.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
xterm	4.17.0 -> 4.18.0

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Release Notes

xtermjs/xterm.js

### [`v4.18.0`](https://togithub.com/xtermjs/xterm.js/releases/4.18.0) [Compare Source](https://togithub.com/xtermjs/xterm.js/compare/4.17.0...4.18.0) #### 📦 API - Support buffer decorations ([#​1852](https://togithub.com/xtermjs/xterm.js/issues/1852)) via [@​meganrogge](https://togithub.com/meganrogge) ```ts const marker = term.addMarker(1); const decoration = term.registerDecoration({ marker, x: 5 }); decoration.onRender(() => { decoration.element.style.backgroundColor = 'red'; }); ```  - Make registerMarker's cursor offset optional ([#​3663](https://togithub.com/xtermjs/xterm.js/issues/3663)) via [@​childrentime](https://togithub.com/childrentime) ```ts // Before const markerAtCursor = term.registerMarker(0); // After const markerAtCursor = term.registerMarker(); ``` #### 🐞 Bug fixes - Clear glyph vertices when switching buffers ([#​3624](https://togithub.com/xtermjs/xterm.js/issues/3624)) via [@​Tyriar](https://togithub.com/Tyriar) - On buffer clear, dispose of markers ([#​3628](https://togithub.com/xtermjs/xterm.js/issues/3628)) via [@​meganrogge](https://togithub.com/meganrogge) #### 📝 Documentation and internal improvements - Make VSCode tasks faster on reload ([#​3662](https://togithub.com/xtermjs/xterm.js/issues/3662)) via [@​Tyriar](https://togithub.com/Tyriar) #### 🎉 New real-world use cases - Libv86 Terminal Forwarding ([#​3664](https://togithub.com/xtermjs/xterm.js/issues/3664)) via [@​hello-smile6](https://togithub.com/hello-smile6) *** #### 🤝 Compatible addon versions - `xterm-addon-attach@0.6.0` - `xterm-addon-fit@0.5.0` - `xterm-addon-ligatures@0.5.2` - `xterm-addon-search@0.8.2` - `xterm-addon-serialize@0.6.1` - `xterm-addon-unicode11@​0.3.0` - `xterm-addon-web-links@0.5.1` - `xterm-addon-webgl@0.11.4`

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