fix(DMVP-10106): Cronjob updates

[aghamyan44]

No description provided.

[what-the-diff]

PR Summary 📃✨

• Lifting our App to Greater Heights!
  Let's celebrate 🎉, we've just upgraded our application and chart to newer versions (0.1.39). This means smoother performance for our application and a better experience for you!

• Empowering the README!
  We've added several new fields to the README.md. These enhancements offer more flexibility and control when configuring your jobs. Remember, knowledge is power; more info means more power to you! 😄💪

• Boosting the Templates!
  Hey, guess what? Our cronjob.yaml template just got supercharged ⚡. It now supports a bunch of new features for jobs so you can tailor things just right for your task! Isn't that fantastic?

• Service Account Labels...sorted!
  Boom! We've just improved serviceaccount.yaml to support labels. Managing service accounts just became a whole lot easier! 🎯

• Default Values for your Ease!
  The trip doesn't end there; we've upgraded values.yaml too 🚀. It now includes default values for many fields to make your life easier. Plus, a brand new rbac section to help create Role/ClusterRole if needed.

Keep coding, keep shining! 💎🚀

[mrdntgrn]

• lets set default values of new added config fields with set values, for example successfulJobsHistoryLimit default is 3, jobBackoffLimit one has 6 as default. This will keep backward compatibility so that when one will update this helm to new version no issues/different behavior will be there
• can we have description on each new added field here in form of comment in the end of line as we have for example for timeZone field?
• please add example on root examples folder of repo on how rbac config can be activated/used