Update all dependencies

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
Jinja2	minor	==2.10.3 -> ==2.11.1
PyYAML	minor	==5.1.2 -> ==5.3

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Release Notes

yaml/pyyaml

### [`v5.3`](https://togithub.com/yaml/pyyaml/compare/5.2...5.3) [Compare Source](https://togithub.com/yaml/pyyaml/compare/5.2...5.3) ### [`v5.2`](https://togithub.com/yaml/pyyaml/blob/master/CHANGES#​52-2019-12-02) [Compare Source](https://togithub.com/yaml/pyyaml/compare/5.1.2...5.2) - Repair incompatibilities introduced with 5.1. The default Loader was changed, but several methods like add_constructor still used the old default [#​279](https://togithub.com/yaml/pyyaml/pull/279) -- A more flexible fix for custom tag constructors [#​287](https://togithub.com/yaml/pyyaml/pull/287) -- Change default loader for yaml.add_constructor [#​305](https://togithub.com/yaml/pyyaml/pull/305) -- Change default loader for add_implicit_resolver, add_path_resolver - Make FullLoader safer by removing python/object/apply from the default FullLoader [#​347](https://togithub.com/yaml/pyyaml/pull/347) -- Move constructor for object/apply to UnsafeConstructor - Fix bug introduced in 5.1 where quoting went wrong on systems with sys.maxunicode <= 0xffff [#​276](https://togithub.com/yaml/pyyaml/pull/276) -- Fix logic for quoting special characters - Other PRs: [#​280](https://togithub.com/yaml/pyyaml/pull/280) -- Update CHANGES for 5.1

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