Update pytest-cov requirement from <6,>=5 to >=5,<8

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@v5.0.0...v7.1.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 7.1.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -47,7 +47,7 @@ otel = [
 ]
 dev = [
     "pytest >=8,<9",
-    "pytest-cov >=5,<6",
+    "pytest-cov >=5,<8",
     "hypothesis >=6.100,<7",
     "testcontainers[postgres] >=4,<5",
     "ruff >=0.5,<1",