demo version updates (#51)

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## References

- TODO

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## Submitter checklist

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- [ ] The PR request is well described and justified, including the body
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- [ ] The PR title represents the desired changelog entry
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guide)
- [ ] Test coverage that demonstrates that the change works as expected
- [ ] For new features, there's necessary documentation in this pull
request or in a subsequent PR to
[wiremock.org](https://github.com/wiremock/wiremock.org)

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