Update jinja2 requirement from <2.12 to <3.1

[dependabot]

Updates the requirements on jinja2 to permit the latest version.

Release notes

Sourced from jinja2's releases.

3.0.0

New major versions of all the core Pallets libraries, including Jinja 3.0, have been released! 🎉

• Read the announcement on our blog: https://palletsprojects.com/blog/flask-2-0-released/
• Read the full list of changes: https://jinja.palletsprojects.com/changes/#version-3-0-0
• Retweet the announcement on Twitter: https://twitter.com/PalletsTeam/status/1392266507296514048
• Follow our blog, Twitter, or GitHub to see future announcements.

This represents a significant amount of work, and there are quite a few changes. Be sure to carefully read the changelog, and use tools such as pip-compile and Dependabot to pin your dependencies and control your updates.

Changelog

Sourced from jinja2's changelog.

Version 3.0.0

Released 2021-05-11

• Drop support for Python 2.7 and 3.5.
• Bump MarkupSafe dependency to >=1.1.
• Bump Babel optional dependency to >=2.1.
• Remove code that was marked deprecated.
• Add type hinting. :pr:1412
• Use :pep:451 API to load templates with :class:~loaders.PackageLoader. :issue:1168
• Fix a bug that caused imported macros to not have access to the current template's globals. :issue:688
• Add ability to ignore trim_blocks using +%}. :issue:1036
• Fix a bug that caused custom async-only filters to fail with constant input. :issue:1279
• Fix UndefinedError incorrectly being thrown on an undefined variable instead of Undefined being returned on NativeEnvironment on Python 3.10. :issue:1335
• Blocks can be marked as required. They must be overridden at some point, but not necessarily by the direct child. :issue:1147
• Deprecate the autoescape and with extensions, they are built-in to the compiler. :issue:1203
• The urlize filter recognizes mailto: links and takes extra_schemes (or env.policies["urlize.extra_schemes"]) to recognize other schemes. It tries to balance parentheses within a URL instead of ignoring trailing characters. The parsing in general has been updated to be more efficient and match more cases. URLs without a scheme are linked as https:// instead of http://. :issue:522, 827, 1172, :pr:1195
• Filters that get attributes, such as map and groupby, can use a false or empty value as a default. :issue:1331
• Fix a bug that prevented variables set in blocks or loops from being accessed in custom context functions. :issue:768
• Fix a bug that caused scoped blocks from accessing special loop variables. :issue:1088
• Update the template globals when calling Environment.get_template(globals=...) even if the template was already loaded. :issue:295
• Do not raise an error for undefined filters in unexecuted if-statements and conditional expressions. :issue:842
• Add is filter and is test tests to test if a name is a registered filter or test. This allows checking if a filter is available in a template before using it. Test functions can be decorated with @pass_environment, @pass_eval_context, or @pass_context. :issue:842, :pr:1248
• Support pgettext and npgettext (message contexts) in i18n extension. :issue:441
• The |indent filter's width argument can be a string to

... (truncated)

Commits

• 417f822 Merge pull request #1417 from pallets/release-3.0.0
• b15fd1c release version 3.0.0
• eed1546 update requirements
• 9627e73 Merge pull request #1416 from pallets/pre-commit-ci-schedule
• 6630044 update pre-commit monthly
• e1bf3bc Merge pull request #1415 from pallets/pre-commit-ci-update-config
• 0798a66 [pre-commit.ci] pre-commit autoupdate
• 53fea33 Merge pull request #1414 from pallets/typing-marker
• ba1f27e fix py.typed in manifest
• 1a3342b Merge pull request #1412 from pallets/typing
• Additional commits viewable in compare view

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[dependabot]

Superseded by #71.