Bump devfile gem to 0.1.1

Issue - Workspaces cannot be created on CentOS 7 / Ubun... (#499476 - closed)

What does this MR do and why?

This is for the fix customer issue on using workspaces with earlier OS versions.

MR acceptance checklist

• Bump the devfile version to 0.1.1

Screenshots or screen recordings

NA

How to set up and validate locally

NA