v0.7.1

### Added

- Add es _count API (#4410)
- Add _elastic/_field_caps API (#4350)
- Make gRPC message size configurable (#4388)
- Add API endpoint to get some control-plan internal info (#4339)
- Add Google Cloud Storage Implementation available for storage paths starting with `gs://` (#4344)

### Changed

- Return 404 on index not found in ES Bulk API (#4425)
- Allow $ and @ characters in field names (#4413)

### Fixed
- Assign all sources/shards, even if this requires exceeding the indexer #4363 
- Fix traces doc mapping (service name set as  fast) and update default otel logs index ID to `otel-logs-v0_7` (#4401)
- Fix parsing multi-line queries (#4409)
- Fix range query for optional fast field panics with Index out of bounds (#4362)

### Migration from 0.70 to 0.7.1

Quickwit 0.7.1 will create the new index otel-logs-v0_7 which is now used by default when ingesting data with the OTEL gRPC and HTTP API.

In the traces index otel-traces-v0_7, the `service_name` field is now fast. No migration is done if otel-traces-v0_7 already exists. If you want `service_name` field to be fast, you have to delete first the existing otel-traces-v0_7 index or you need to create your own index.