Upgrade dependencies + add support for Python 3.13 and Django 5.1

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

.gitlab-ci.yml

@@ -7,7 +7,7 @@ py311:
   image: python:3.11-alpine
   before_script:
     - apk add --no-cache libmagic
-    - apk add --no-cache gettext git  # Useful for django-haystack, remove when the newer versions are in PyPI
+    - apk add --no-cache gettext
     - pip install tox --no-cache-dir
   script: tox -e py311
 
@@ -16,10 +16,19 @@ py312:
   image: python:3.12-alpine
   before_script:
     - apk add --no-cache libmagic
-    - apk add --no-cache gettext git  # Useful for django-haystack, remove when the newer versions are in PyPI
+    - apk add --no-cache gettext
     - pip install tox --no-cache-dir
   script: tox -e py312
 
+py313:
+  stage: test
+  image: python:3.13-alpine
+  before_script:
+    - apk add --no-cache libmagic
+    - apk add --no-cache gettext
+    - pip install tox --no-cache-dir
+  script: tox -e py313
+
 linters:
   stage: quality-assurance
   image: python:3-alpine