Fix the dependency issue with werkzeug

(Redmine issue: #7544)

conf/requirements.pip

@@ -9,6 +9,7 @@ alembic==1.4.2
 jinja2==3.0.3
 blinker==1.4
 bsddb3==6.2.7
+werkzeug==2.0.2
 flask==1.1.1
 flask-login==0.5.0
 flask-mail==0.9.1
@@ -35,3 +36,4 @@ idea-format==0.1.11
 python-dateutil==2.8.1
 PyBabel-json-md==0.1.0
 itsdangerous==2.0.1
+