Bump xterm from 4.3.0-beta.30 to 4.3.0 in /terminus-terminal

Bumps [xterm](https://github.com/xtermjs/xterm.js) from 4.3.0-beta.30 to 4.3.0.
- [Release notes](https://github.com/xtermjs/xterm.js/releases)
- [Commits](https://github.com/xtermjs/xterm.js/commits/4.3.0)

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

terminus-terminal/package.json

@@ -27,7 +27,7 @@
     "runes": "^0.4.2",
     "slug": "^1.1.0",
     "uuid": "^3.3.2",
-    "xterm": "4.3.0-beta.30",
+    "xterm": "4.3.0",
     "xterm-addon-fit": "^0.4.0-beta2",
     "xterm-addon-ligatures": "^0.2.1",
     "xterm-addon-search": "^0.4.0-beta5",