Bump werkzeug from 3.0.3 to 3.0.6 in /requirements

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 3.0.3 to 3.0.6.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@3.0.3...3.0.6)

---
updated-dependencies:
- dependency-name: werkzeug
  dependency-type: indirect
...

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

requirements/tests.txt

@@ -11,16 +11,14 @@ click==8.1.7
     # via flask
 coverage[toml]==7.6.1
     # via pytest-cov
-exceptiongroup==1.2.2
-    # via pytest
 flask==3.0.3
     # via
     #   flask-sqlalchemy
     #   flask-wtf
 flask-sqlalchemy==3.1.1
-    # via -r requirements/tests.in
+    # via -r tests.in
 flask-wtf==1.2.1
-    # via -r requirements/tests.in
+    # via -r tests.in
 greenlet==3.0.3
     # via sqlalchemy
 iniconfig==2.0.0
@@ -42,19 +40,15 @@ pluggy==1.5.0
     # via pytest
 pytest==8.3.2
     # via
-    #   -r requirements/tests.in
+    #   -r tests.in
     #   pytest-cov
 pytest-cov==5.0.0
-    # via -r requirements/tests.in
+    # via -r tests.in
 sqlalchemy==2.0.32
     # via flask-sqlalchemy
-tomli==2.0.1
-    # via
-    #   coverage
-    #   pytest
 typing-extensions==4.12.2
     # via sqlalchemy
-werkzeug==3.0.3
+werkzeug==3.0.6
     # via flask
 wtforms==3.1.2
     # via flask-wtf