Add post release due to a wrong core version

pyproject.toml

 [tool.poetry]
 name = "AlekSIS-App-Kort"
-version = "0.3"
+version = "0.3.post0"
 packages = [
     { include = "aleksis" }
 ]
@@ -29,7 +29,7 @@ url = "https://edugit.org/api/v4/projects/461/packages/pypi/simple"
 priority = "supplemental"
 [tool.poetry.dependencies]
 python = "^3.9"
-aleksis-core = "^4.0.dev0"
+aleksis-core = "^3.0"
 python-barcode = "^0.15.0"
 django-formtools = "^2.3"
 django-ace = "^1.0.12"