Ignore ruby files that were generated in CI.

[JBassett]

Summary

We need a clean directory when we release otherwise the builds will fail. This is ignoring the files that were created when fastlane was run.

https://github.com/home-assistant/android/actions/runs/5728645711/job/15523661247

git status
shell: /usr/bin/bash -e ***0***
env:
  JAVA_HOME: /opt/hostedtoolcache/Java_Temurin-Hotspot_jdk/17.0.7-7/x6[4](https://github.com/home-assistant/android/actions/runs/5728645711/job/15523661247#step:16:4)
  JAVA_HOME_17_X[6](https://github.com/home-assistant/android/actions/runs/5728645711/job/15523661247#step:16:6)4: /opt/hostedtoolcache/Java_Temurin-Hotspot_jdk/1[7](https://github.com/home-assistant/android/actions/runs/5728645711/job/15523661247#step:16:7).0.7-7/x64
##[endgroup***
On branch master
Your branch is up to date with 'origin/master'.

Untracked files:
  (use "git add <file>..." to include in what will be committed)
	.bundle/
	vendor/

nothing added to commit but untracked files present (use "git add" to track)

Screenshots

N/A

Link to pull request in Documentation repository

N/A

Any other notes