Add bumpver to help the version bump and push to release branch

[codecov[bot]]

Codecov Report

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

:exclamation: No coverage uploaded for pull request base (main@871b7fd). Click here to learn what that means.

:exclamation: Current head 0be186d differs from pull request most recent head f426f2a. Consider uploading reports for the commit f426f2a to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #10 +/- ## ======================================= Coverage ? 33.76% ======================================= Files ? 20 Lines ? 2375 Branches ? 0 ======================================= Hits ? 802 Misses ? 1573 Partials ? 0 ``` | [Flag](https://app.codecov.io/gh/aiidalab/ipyoptimade/pull/10/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aiidalab) | Coverage Δ | | |---|---|---| | [ipyoptimade-py-3.11](https://app.codecov.io/gh/aiidalab/ipyoptimade/pull/10/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aiidalab) | `33.76% <ø> (?)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aiidalab#carryforward-flags-in-the-pull-request-comment) to find out more.

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