build(deps): bump cohere from 7.0.5 to 7.0.8

Bumps [cohere](https://github.com/cohere-ai/cohere-python) from 7.0.5 to 7.0.8.
- [Release notes](https://github.com/cohere-ai/cohere-python/releases)
- [Commits](cohere-ai/cohere-python@7.0.5...7.0.8)

---
updated-dependencies:
- dependency-name: cohere
  dependency-version: 7.0.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -37,7 +37,7 @@ dependencies = [
     # Model providers & cloud SDKs
     "anthropic==0.116.0",
     "boto3==1.43.54",
-    "cohere==7.0.5",
+    "cohere==7.0.8",
     "dashscope==1.26.3",
     "qianfan==0.4.12.3",
     "tencentcloud-sdk-python-common==3.1.134",