Update pytest-cov requirement in /.dev in the packages group (#639)

Updates the requirements on [pytest-cov](https://github.com/pytest-dev/pytest-cov) to permit the latest version.

Updates `pytest-cov` to 6.3.0
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v6.2.0...v6.3.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 6.3.0
  dependency-type: direct:development
  dependency-group: packages
...

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Author: dependabot[bot]

.dev/requirements_dev.txt

@@ -4,7 +4,7 @@ httpx~=0.28.1
 invoke~=2.2
 pre-commit~=4.3
 pytest~=8.4
-pytest-cov~=6.2
+pytest-cov~=6.3
 
 # httpx is necessary due to the use of fastapi/starlette's TestClient
 # See https://fastapi.tiangolo.com/tutorial/testing/?h=testclient#using-testclient

app/__init__.py

@@ -6,6 +6,6 @@
 
 from __future__ import annotations
 
-__version__ = "1.20250904.447"
+__version__ = "1.20250908.448"
 __author__ = "SINTEF"
 __author_email__ = "Team4.0@SINTEF.no"