Spring-ai fix: wrong operator in neo4j vector store filter expression

Hello,

this PR fixes an issue with the neo4j vector store. Currently it is not possible to use the "Not equals" filter expression since the used operator (!=) is not valid. In Neo4j/Cypher inequality is checked with the <>-operator.

See also: Cypher Manual - Equality

Comment From: markpollack

merged in bce45c2d2fd1a28381884fc0bed0dfcc89cf3a19

thanks!

Comment From: Dimibe

Hi @markpollack, I cannot find the commit nor can I see the fix. Can you link it for me?