Update pytest-cov requirement from <7 to <8 in /cratedb_sqlparse_py

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@v1.0...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]

cratedb_sqlparse_py/pyproject.toml

@@ -71,7 +71,7 @@ dev = [
   "poethepoet<1",
   "pyproject-fmt<2.7",
   "pytest<9",
-  "pytest-cov<7",
+  "pytest-cov<8",
   "ruff<0.14",
   "validate-pyproject<0.25",
 ]