Update dependency neo4j/graph-data-science to v2.21.0#423

JohT merged 1 commit intomainJohT/code-graph-analysis-pipeline:mainfrom

renovate/neo4j-graph-data-science-2.xJohT/code-graph-analysis-pipeline:renovate/neo4j-graph-data-science-2.xCopy head branch name to clipboard