chore(main): release 7.6.0 (#747)

:robot: I have created a release *beep* *boop*
---


##
[7.6.0](https://github.com/deepgram/deepgram-python-sdk/compare/v7.5.0...v7.6.0)
(2026-07-22)


### Features

* **regen:** flux stt numerals and aura-2 multilingual tts voices
([#746](https://github.com/deepgram/deepgram-python-sdk/issues/746))
([17a1deb](https://github.com/deepgram/deepgram-python-sdk/commit/17a1deb43705f0d9c667f12c72a585159a71ad8f))

#### What's in this release

SDK regeneration for **2026-07-20** (Fern generator `5.14.18`, spec
`ff8fd2b7`).

**Flux STT `numerals`**
- New `ListenV2Numerals` type (`Literal["true", "false"]`) in
`types/listen_v2numerals.py`, exported from the package root and
`types`.
- New `numerals` query param on `listen.v2.connect()` and the raw client
(connection-time only). See [docs #1020].
- Demonstrated in `examples/14-transcription-live-websocket-v2.py`.
- New wire coverage in `tests/custom/test_listen_v2_connect_wire.py`
(sync + async) pins that `/v2/listen` serializes `numerals=true` and
omits it when absent — the `/v2/listen` handshake previously had no wire
test.

**New Aura-2 multilingual TTS voices**
- ~40 voices added to `SpeakV1Model` and `AudioGenerateRequestModel` (es
/ de / nl / fr / it / ja).
- Additive only — not breaking.

#### Breaking change from spec — mitigated (stays non-breaking)

- The spec removed `stt_latency` from `AgentV1LatencyReport` (docs
#1006). Because `AgentV1LatencyReport` is a server-emitted (read-only)
message, `stt_latency` is re-added by hand as a read-side
backward-compat field (frozen in `.fernignore`): `report.stt_latency`
keeps resolving to `None` instead of raising `AttributeError`, with **no
request/wire impact**. Covered by
`tests/custom/test_latency_report_stt_compat.py`. This keeps the release
a minor bump rather than a major.

#### Verification

- `mypy src/deepgram` — clean (857 files)
- `pytest` — 331 passed, 1 skipped
- `ruff check src/deepgram` — clean

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