SECURITY: Update Jinja2 to more recent version (trailofbits#14258)

* Update main.yml

* Create dependabot.yml

* Bump actions/setup-python from 1 to 2.2.2

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 1 to 2.2.2.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v1...v2.2.2)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

* Update requirements.txt

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -1,3 +1,3 @@
 ansible==2.9.20
-jinja2==2.8
+jinja2==2.11.3
 netaddr