ci: update pytest-cov requirement from <7.0.0,>=6.0.0 to >=6.0.0,<8.0.0

Updates the requirements on [pytest-cov](https://github.com/pytest-dev/pytest-cov) to permit the latest version.
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v6.0.0...v7.0.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 7.0.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pyproject.toml

@@ -57,7 +57,7 @@ dev = [
     "mypy>=1.15.0,<2.0.0",
     "pre-commit>=3.2.0,<4.4.0",
     "pytest>=8.0.0,<9.0.0",
-    "pytest-cov>=6.0.0,<7.0.0",
+    "pytest-cov>=6.0.0,<8.0.0",
     "pytest-asyncio>=1.0.0,<1.2.0",
     "pytest-xdist>=3.0.0,<4.0.0",
     "ruff>=0.12.0,<0.14.0",
@@ -142,7 +142,7 @@ features = ["anthropic", "litellm", "llamaapi", "ollama", "openai", "otel", "mis
 extra-dependencies = [
     "moto>=5.1.0,<6.0.0",
     "pytest>=8.0.0,<9.0.0",
-    "pytest-cov>=6.0.0,<7.0.0",
+    "pytest-cov>=6.0.0,<8.0.0",
     "pytest-asyncio>=1.0.0,<1.2.0",
     "pytest-xdist>=3.0.0,<4.0.0",
 ]