Bump xterm-addon-fit in /terminus-terminal

Bumps [xterm-addon-fit](https://github.com/xtermjs/xterm.js) from 0.3.0-beta7 to 0.4.0-beta1.
- [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

@@ -28,7 +28,7 @@
     "slug": "^1.1.0",
     "uuid": "^3.3.2",
     "xterm": "3.15.0-beta98",
-    "xterm-addon-fit": "^0.3.0-beta2",
+    "xterm-addon-fit": "^0.4.0-beta1",
     "xterm-addon-ligatures": "^0.2.0",
     "xterm-addon-search": "^0.3.0-beta2",
     "xterm-addon-webgl": "^0.3.0-beta2"