5264: Dumpless upgrade r=dureuill a=irevoire
# Pull Request
Usage: https://meilisearch.notion.site/Dumpless-upgrade-fff4b06b651f81f1acafe24d4687b3f7?pvs=74
## Related issue
Fixes https://github.com/meilisearch/meilisearch/issues/5162
## What does this PR do?
- Implement the dumpless upgrade with multiple hooks:
- In meilisearch directly before the task queue has been opened
- In the index-scheduler while processing the task
- In milli while upgrading the indexes
- There is no hook at search/query time to handle the old version of a database. That's left to the next person upgrading a database
- A new special type of task (`upgradeDatabase`) that can be retried has been introduced
- A new experimental cli flag has been introduced
- The version has been upgraded to the v1.13.0 in this PR otherwise it was a lot of useless work to test the dumpless upgrade
- Multiple tests have been introduced
## PR checklist
Please check if your PR fulfills the following requirements:
- [ ] Update the issue template we use for features, mentioning what we should do in case of a database upgrade
- [ ] The experimental feature discussion should be opened and updated in the PR
- [ ] Update the PRD
- [ ] Add the new error codes
- [ ] Add the task details
- [ ] Add the telemetry
## Notes
The new tests introduced are not _that_ slow
Co-authored-by: Tamo <tamo@meilisearch.com>
5257: Fix ollama r=Kerollmops a=dureuill
Fix oversight in ollama embedder
WIP Integration tests are on branch `ollama-integration-test` and will be added as a future PR.
Co-authored-by: Louis Dureuil <louis@meilisearch.com>
5262: Bring back changes from v1.12.4, v1.12.5, and v1.12.6 into main r=dureuill a=Kerollmops
This PR follows [this guideline to bring back changes after we worked on v1.12.4, v1.12.5, and v1.12.6](https://github.com/meilisearch/engine-team/blob/main/resources/meilisearch-release.md#after-the-release-bring-back-changes-to-main).
Co-authored-by: Louis Dureuil <louis@meilisearch.com>
Co-authored-by: ManyTheFish <many@meilisearch.com>
Co-authored-by: Kerollmops <clement@meilisearch.com>
Co-authored-by: Kerollmops <Kerollmops@users.noreply.github.com>
