Update pytest-randomly requirement from ~=3.15.0 to ~=3.16.0

Updates the requirements on [pytest-randomly](https://github.com/pytest-dev/pytest-randomly) to permit the latest version.
- [Changelog](https://github.com/pytest-dev/pytest-randomly/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-randomly@3.15.0...3.16.0)

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

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

pyproject.toml

@@ -113,7 +113,7 @@ test = [
     "pytest-cov ~= 5.0.0",
     "pytest-github-actions-annotate-failures ~= 0.2.0",
     "pytest-httpserver ~= 1.1.0",
-    "pytest-randomly ~= 3.15.0",
+    "pytest-randomly ~= 3.16.0",
 ]
 typing = [
     "types-Pygments ~= 2.18.0.20240506",