Bump pytest-cov from 5.0.0 to 6.0.0

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 5.0.0 to 6.0.0.
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v5.0.0...v6.0.0)

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

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

tests/requirements.in

@@ -3,5 +3,5 @@ email_validator==2.2.0
 flask-wtf==1.2.1
 flask==3.0.3
 govuk-frontend-jinja==3.4.0
-pytest-cov==5.0.0
+pytest-cov==6.0.0
 pyyaml==6.0.2

tests/requirements.txt

@@ -11,19 +11,19 @@ click==8.1.7
 coverage[toml]==7.6.3
     # via pytest-cov
 deepmerge==2.0
-    # via -r requirements.in
+    # via -r tests/requirements.in
 dnspython==2.7.0
     # via email-validator
 email-validator==2.2.0
-    # via -r requirements.in
+    # via -r tests/requirements.in
 flask==3.0.3
     # via
-    #   -r requirements.in
+    #   -r tests/requirements.in
     #   flask-wtf
 flask-wtf==1.2.1
-    # via -r requirements.in
+    # via -r tests/requirements.in
 govuk-frontend-jinja==3.4.0
-    # via -r requirements.in
+    # via -r tests/requirements.in
 idna==3.10
     # via email-validator
 iniconfig==2.0.0
@@ -47,10 +47,10 @@ pluggy==1.5.0
     # via pytest
 pytest==8.3.3
     # via pytest-cov
-pytest-cov==5.0.0
-    # via -r requirements.in
+pytest-cov==6.0.0
+    # via -r tests/requirements.in
 pyyaml==6.0.2
-    # via -r requirements.in
+    # via -r tests/requirements.in
 werkzeug==3.0.4
     # via flask
 wtforms==3.1.2