Update dependency aleksis-core to ~2.12.0

This MR contains the following updates:

Package	Type	Update	Change
aleksis-core (source)	dependencies	minor	~2.10.2 -> ~2.12.0

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Release Notes

AlekSIS/official/AlekSIS-Core

v2.12.4

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v2.12.3

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Fixed

* The permission check for the dashboard edit page failed when the user had no person assigned.
* OIDC scope "phone" had no claims.
* AlekSIS groups were not synced to Django groups on registration of existing persons
* Invitations for existing short name did not work.
* Invitations for persons without pre-defined e-mail address did not behave correctly

v2.12.2

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Fixed

* Incorporate SPDX license list for app licenses on About page because
  spdx-license-list dependency vanished.

v2.12.1

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Fixed

* An invalid backport caused OIDC clients without PKCD to fail.

v2.12

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Fixed

* The permission check for the dashboard edit page failed when the user had no person assigned.
* OIDC scope "phone" had no claims.
* AlekSIS groups were not synced to Django groups on registration of existing persons
* Invitations for existing short name did not work.
* Invitations for persons without pre-defined e-mail address did not behave correctly

v2.11.2

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v2.11.1

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v2.11

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This release sunsets the 2.x series of the AleKSIS core.

Deprecated

* All frontends using Django views and Django templates are deprecated and support
  for them will be removed in AlekSIS-Core 3.0. All frontend code must be written in
  Vue.js and be properly separated from the backend. In the same spirit, all backend
  features must expose GraphQL APIs for the frontend to use.

Added
~~~~~

The following features are introduced here mainly to simplify gradual
updates. GraphQL and the Vuetify/Vue.js frontend mechanisms are preview
functionality and app developers should not rely on them before AlekSIS-Core
3.0.

* Introduce GraphQL API and Vue.js frontend implementation
* Introduce webpack bundling for frontend code

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