chore(deps): clean up dependencies

attached apis-core-rdf to pypi version 0.31.0
removed graphviz, dot and pydot as they are already included from core.

pyproject.toml

@@ -10,7 +10,7 @@ packages = [{include = "apis_ontology"}]
 [tool.poetry.dependencies]
 python = "^3.11"
 psycopg2 = "^2.9"
-apis-core-rdf = { git = "https://github.com/acdh-oeaw/apis-core-rdf.git", branch = "main" }
+apis-core-rdf = "0.31.0"
 apis-acdhch-default-settings = "1.5.0"
 django-acdhch-functions = "^0.1.3"
 django-extensions = "^3.1.3"
@@ -19,9 +19,7 @@ pandas = "^2.2.2"
 django-select2 = "^8.1.2"
 lxml = "^5.2.2"
 sqlparse = "^0.5.1"
-graphviz = "^0.20.3"
-dot = "^0.3.0"
-pydot = "^3.0.2"
+
 
 [tool.poetry.group.dev.dependencies]
 ipython = "^8.29.0"