Merge pull request PowerDNS#418 from PowerDNS/dependabot/pip/regression-tests/jinja2-3.1.3

build(deps): bump jinja2 from 2.11.3 to 3.1.3 in /regression-tests

Author: neilcook

regression-tests/requirements.txt

@@ -3,7 +3,7 @@ pytest==7.4.2
 click==6.7
 coverage==4.4.1
 elasticsearch>=7.0.0
-Jinja2==2.11.3
+Jinja2==3.1.3
 MarkupSafe==2.1.3
 pytz==2017.2
 urllib3==2.0.7