fix(deps): update dependency python-keycloak to v7

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
python-keycloak (changelog)	^3.6.1 → ^7.0.0

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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• any of the package files in this branch needs updating, or
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The artifact failure details are included below:

File name: poetry.lock

Updating dependencies
Resolving dependencies...


The current project's supported Python range (>=3.9,<4.0) is not compatible with some of the required packages Python requirement:
  - python-keycloak requires Python <4,>=3.10, so it will not be installable for Python >=3.9,<3.10
  - python-keycloak requires Python <4,>=3.10, so it will not be installable for Python >=3.9,<3.10
  - python-keycloak requires Python <4,>=3.10, so it will not be installable for Python >=3.9,<3.10
  - python-keycloak requires Python <4,>=3.10, so it will not be installable for Python >=3.9,<3.10

Because no versions of python-keycloak match >=7.0.0,<7.0.2 || >7.0.2,<7.0.3 || >7.0.3,<7.1.0 || >7.1.0,<7.1.1 || >7.1.1,<8.0.0
 and python-keycloak (7.0.2) requires Python <4,>=3.10, python-keycloak is forbidden.
And because python-keycloak (7.0.3) requires Python <4,>=3.10
 and python-keycloak (7.1.0) requires Python <4,>=3.10, python-keycloak is forbidden.
So, because python-keycloak (7.1.1) requires Python <4,>=3.10
 and keystone-keycloak-backend depends on python-keycloak (^7.0.0), version solving failed.

  * Check your dependencies Python requirement: The Python requirement can be specified via the `python` or `markers` properties

    For python-keycloak, a possible solution would be to set the `python` property to ">=3.10,<4.0"
For python-keycloak, a possible solution would be to set the `python` property to ">=3.10,<4.0"
For python-keycloak, a possible solution would be to set the `python` property to ">=3.10,<4.0"
For python-keycloak, a possible solution would be to set the `python` property to ">=3.10,<4.0"

    https://python-poetry.org/docs/dependency-specification/#python-restricted-dependencies,
    https://python-poetry.org/docs/dependency-specification/#using-environment-markers