Helm: Update job ttl to make it configurable

[emuthiah]

What this PR does / why we need it:
This PR adds the ability to set non-zero value for .spec.ttlSecondsAfterFinished field of webhook Jobs. It is needed because some CD tools (eg. ArgoCD) are not able to get the status of the completed Job before it is cleaned up and hangs at syncing status. By setting ttlSecondsAfterFinished value to non-zero (eg. 10 seconds), it gives ArgoCD enough time to get the status of the job and complete sync operation.
This change does not break or change existing functionality. It add the ability to change ttlSecondsAfterFinished if required.
Special notes for your reviewer:

If applicable:

• this PR has an associated PR with documentation in akri-docs
• this PR contains unit tests
• added code adheres to standard Rust formatting (cargo fmt)
• code builds properly (cargo build)
• code is free of common mistakes (cargo clippy)
• all Akri tests succeed (cargo test)
• inline documentation builds (cargo doc)
• all commits pass the DCO bot check by being signed off -- see the failing DCO check for instructions on how to retroactively sign commits

[diconico07]

/version patch

[frank-f]

I have been wondering, why my Akri deployments are almost always getting stuck at the webhook configuration hook. I think this explains it and it's a shame that this has not been merged yet. Is there any way to speed up the process? The changes seem to be pretty straightforward to me?

[kate-goldenring]

/version patch

[kate-goldenring]

@frank-f I have stepped down as a maintainer of the project but I bumped the version to remove conflicts. @yujinkim-msft should be able to do a final review and merge to get this in

[frank-f]

Thank you very much @kate-goldenring and @yujinkim-msft for your very prompt reaction 🙏