An overdue release!

A long-awaited release with all contributions that accumulated throughout the year. Thank you for all the pulls requests!

The complete changelog:

• upgraded kubectl to version v1.21.0
• feat: update README.md to handle permissions error (#28) by @c-simpson
• fix: dockerfile update (#23) by @michalschott
• fix: not found jobs are ready (#24) by @sergeyshaykhullin
• fix: does not accept failed jobs if less then 10 pods failed (#21) by @robinvandenbogaard