Add ssh tools to Docker Images

[jonathandao0]

Ran into this issue when trying to have an automated GitHub Action run Spotless formatting on a protected main branch of robot code and trying to follow this workaround to use GitHub deploy keys. In some cases, it may be preferable to use ssh authentication to do this, but this cannot be done as the current Docker images do not include 'ssh-agent'.

I was able to get around this by following the main solution listed (Made a mistake and added the bot to the 'Allow force pushes' list instead of the bypass list), but it might be useful to have this option.