Bump xterm-addon-search in /terminus-terminal

Bumps [xterm-addon-search](https://github.com/xtermjs/xterm.js) from 0.3.0-beta9 to 0.4.0-beta3.
- [Release notes](https://github.com/xtermjs/xterm.js/releases)
- [Commits](https://github.com/xtermjs/xterm.js/commits)

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

terminus-terminal/package.json

@@ -30,7 +30,7 @@
     "xterm": "3.15.0-beta98",
     "xterm-addon-fit": "^0.4.0-beta1",
     "xterm-addon-ligatures": "^0.2.0",
-    "xterm-addon-search": "^0.3.0-beta2",
+    "xterm-addon-search": "^0.4.0-beta3",
     "xterm-addon-webgl": "^0.4.0-beta1"
   },
   "peerDependencies": {