poetry: bump pytest-cov from 4.1.0 to 5.0.0

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 4.1.0 to 5.0.0.
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v4.1.0...v5.0.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

poetry.lock

@@ -19,7 +19,7 @@ layers = {path = "layer", develop = true}
 nrlf-converter = {url = "https://github.com/NHSDigital/nrlf-converter/releases/download/0.0.9/nrlf_converter-0.0.9-py3-none-any.whl"}
 pytest = "^8.1.1"
 pytest-mock = "^3.12.0"
-pytest-cov = "^4.1.0"
+pytest-cov = "^5.0.0"
 boto3 = "^1.34.60"
 sh = "^2.0.6"
 moto = {extras = ["dynamodb", "s3"], version = "^5.0.3"}