Update pytest requirement from <8,>=7 to >=7,<9

Updates the requirements on [pytest](https://github.com/pytest-dev/pytest) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.0.0...8.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 schema-salad >= 5.0.20200220195218, < 9
 junit-xml >= 1.8
-pytest >= 7, < 8
+pytest >= 7, < 9
 defusedxml
 importlib_resources>=1.4;python_version<'3.9'

test-requirements.txt

@@ -1,5 +1,5 @@
 cwlref-runner
 cwltool
-pytest >= 7, < 8
+pytest >= 7, < 9
 pytest-cov
 pytest-xdist