Drop support for Python 3.8 and replace pkg_resources with importlib.resources

[luisfelipec95]

Description

• Dropped support for Python 3.8
• Upgrade requirements
• Replace pkg_resources lib with importlib.resources:

pkg_resources (from setuptools) is deprecated and will be removed in future Python versions.
The new implementation uses importlib.resources, which is the recommended alternative and is fully available in Python 3.9+.

Testing instructions

1. Create an environment with Sumac release, you can use Tutor or TVM.

2. Install and enable tutor-contrib-picasso.

3. Install and enable tutor-mfe.

4. Add the following settings in your config.yml:

   PICASSO_DEFAULT_SITE_THEME: test-1
   PICASSO_EOX_THEMING_DPKG:
     name: eox-theming
     repo: 'git@github.com:eduNEXT/eox-theming.git'
     version: lfc/deprecate-pkg-resources
   PICASSO_THEMES:
     - name: ednx-test-themes
       repo: 'git@github.com:eduNEXT/ednx-test-themes.git'
       version: master
   PICASSO_THEMES_NAME:
     - test-1
     - test-2
     - test-3
   PICASSO_THEMES_ROOT: /openedx/themes
   PICASSO_THEME_DIRS:
     - /openedx/themes/ednx-test-themes/edx-platform

5. Clone the test themes folder with tutor picasso enable-themes

6. Add the testing themes running and init the environment with tutor dev launch

7. Create a new tenant and add this settings to the tenant configs:

   {
       "EDNX_USE_SIGNAL": true,
       "ENABLE_ACCOUNT_MICROFRONTEND": false,
       "ENABLE_AUTHN_MICROFRONTEND": false,
       "PLATFORM_NAME": "Tenant A",
       "SITE_NAME": "tenant-a.local.openedx.io:8000",
       "THEME_OPTIONS": {
           "scripts": {
               "/login": [
                   {
                       "content": "alert('This is a test for the inline script');",
                       "type": "inline"
                   }
               ]
           },
           "theme": {
               "grandparent": "test-3",
               "name": "test-1",
               "parent": "test-2"
           }
       },
       "course_org_filter": [
           "TenantA"
       ],
       "footer_override": "<div style=\"width: 100%;\"><div style=\"position: relative; padding-bottom: 41.67%; padding-top: 0; height: 0;\"><iframe title=\"Footer X\" frameborder=\"0\" width=\"1200\" height=\"500\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" src=\"https://view.genially.com/66464d3334225f0015c0dc0e\" type=\"text/html\" allowscriptaccess=\"always\" allowfullscreen=\"true\" scrolling=\"yes\" allownetworking=\"all\"></iframe> </div> </div>",
       "header_langselector": true,
       "header_links": [
           {
               "target": "_self",
               "txt": "Courses",
               "url": "/courses"
           },
           {
               "class": "mx-2",
               "target": "_self"
           }
       ],
       "released_languages": "en,vi,es-419"
   }

8. Go to your admin panel and edit the learner_home_mfe.enabled Waffle Flag with the property Everyone in No to disable the Authn MFE.

9. Run the test cases. In this file, you can find more information about the plugin configuration.

Other Information

openedx/public-engineering#273

[magajh]

Thanks @luisfelipec95, a couple of things that we still need to do in this PR:

• Remove the backports.zoneinfo constraint https://github.com/eduNEXT/eox-theming/blob/master/requirements/constraints.txt#L14
• Update the compatibility table since this new version is no longer compatible with Quince https://github.com/eduNEXT/eox-theming/tree/master?tab=readme-ov-file#compatibility-notes. We should also mention that we lose compatibility with Quince release in the Changelog
• Can you please also review and merge this PR? chore(deps): bump pypa/gh-action-pypi-publish from 1.12.2 to 1.12.4 #80

I've checked our site in stage, and the theming looks fine. I haven't had time to thoroughly test it, but if you and @DeimerM have tested it in stage and are sure it's working, then I'm okay with it

[magajh]

Just a small comment, everything else LGTM

[magajh]

LGTM