fix: dont send empty image references list to exhort#845

Strum355 merged 1 commit intofabric8-analytics:mainfabric8-analytics/fabric8-analytics-vscode-extension:mainfrom

Strum355:nsc/image-analysis-no-refsStrum355/fabric8-analytics-vscode-extension:nsc/image-analysis-no-refsCopy head branch name to clipboard