Upgrade eventheader version for userevents exporter for metrics.

[lalitb]

Fixes # Design discussion issue (if applicable) #

Changes

Please provide a brief description of the changes here.

Merge requirement checklist

• [ ] CONTRIBUTING guidelines followed
• [ ] Unit tests added/updated (if applicable)
• [ ] Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• [ ] Changes in public API reviewed (if applicable)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (14e58a4) 40.4% compared to head (3072a10) 40.4%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #27 +/- ## ===================================== Coverage 40.4% 40.4% ===================================== Files 12 12 Lines 1279 1279 ===================================== Hits 517 517 Misses 762 762 ```

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[lalitb]

@jtescher We need a new package for this crate. It would be unfair to ask you to publish every time. Do you think it would be possible to somehow get the publish access to me and @cijothomas at least for opentelemetry-user-events-metrics and opentelemetry-user-events-logs at this time?

[lalitb]

@jtescher We need a new package for this crate. It would be unfair to ask you to publish every time. Do you think it would be possible to somehow get the publish access to me and @cijothomas at least for opentelemetry-user-events-metrics and opentelemetry-user-events-logs at this time?

@jtescher - Gentle ping on this request :)

[cijothomas]

@jtescher We need a new package for this crate. It would be unfair to ask you to publish every time. Do you think it would be possible to somehow get the publish access to me and @cijothomas at least for opentelemetry-user-events-metrics and opentelemetry-user-events-logs at this time?

Got the access. Thank you!