split post-process-forwarder

[ntcong]

Since getsentry/self-hosted@4a02090, it's required to split post-process-forwarder into errors and transactions entity. This fixed post-process-forwarder deployment crash in the latest sentry (22.10.0)

[Mokto]

Thanks for your PR.

1. We should upgrade the major version as it's a breaking change
2. We could also update Sentry to 22.10 at the same time?

[ntcong]

Thanks for your PR.

1. We should upgrade the major version as it's a breaking change
2. We could also update Sentry to 22.10 at the same time?

I have bumped chart and app version and also added a 17.x upgrade note.

[Mokto]

Amazing, thanks!