Merge pull request #2197 from searxng/dependabot/pip/master/flask-2.2.3

Bump flask from 2.2.2 to 2.2.3

requirements.txt

@@ -1,7 +1,7 @@
 certifi==2022.12.7
 babel==2.11.0
 flask-babel==3.0.1
-flask==2.2.2
+flask==2.2.3
 jinja2==3.1.2
 lxml==4.9.2
 pygments==2.14.0