fix: remove postRenderer from Loki HelmRelease (2.5)

[cbuto]

What problem does this PR solve?:
The fix for the missing annotations was included in 0.69.4 so we can remove these post render patches now

Which issue(s) does this PR fix?:

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Checklist

• If the PR adds a version bump, ensure there is no breaking change in Licensing model (or NA).
• If a chart is changed or app configuration is significantly changed, the chart version is correctly incremented (so that apps are not automatically upgraded from a previous version of DKP).

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[github-actions]

✅ Created Kommander branch to test kommander-applications changes: https://github.com/mesosphere/kommander/tree/kapps/release-2.5/cbuto/loki-reloader-annotations

[cbuto]

https://github.com/mesosphere/kommander/pull/3704 is related to this change since i had to bump the loki versions