Fix: Remove value from CVE Description primary key

Fix the db model of the CVE Description. There should only be one
description per CVE and language. Currently inserting a description may
fail because the value is too long for the primary key btree index.

greenbone/scap/cve/manager.py

@@ -286,7 +286,6 @@ async def _insert_cve_descriptions(
                     index_elements=[
                         CVEDescriptionModel.cve_id,
                         CVEDescriptionModel.lang,
-                        CVEDescriptionModel.value,
                     ],
                     set_=dict(
                         cve_id=statement.excluded.cve_id,

greenbone/scap/cve/models.py

@@ -126,7 +126,7 @@ class CVEDescriptionModel(Base):
 
     cve_id: Mapped[cve_fk] = mapped_column(primary_key=True)
     lang: Mapped[str] = mapped_column(primary_key=True)
-    value: Mapped[str] = mapped_column(primary_key=True)
+    value: Mapped[str]
 
     cve: Mapped[CVEModel] = relationship(back_populates="descriptions")