deps: update dependency jinja2 to v3.1.2 (#16)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [jinja2](https://palletsprojects.com/p/jinja/) ([changelog](https://jinja.palletsprojects.com/changes/)) | `==3.0.3` -> `==3.1.2` | [![age](https://badges.renovateapi.com/packages/pypi/jinja2/3.1.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/jinja2/3.1.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/jinja2/3.1.2/compatibility-slim/3.0.3)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/jinja2/3.1.2/confidence-slim/3.0.3)](https://docs.renovatebot.com/merge-confidence/) |

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