Move AritfactHub to Incubating (#3904)

cncf/toc#728

Signed-off-by: Chris Aniszczyk <[email protected]>

landscape.yml

@@ -6001,14 +6001,15 @@ landscape:
             crunchbase: https://www.crunchbase.com/organization/alibaba-cloud
           - item:
             name: Artifact Hub
-            homepage_url: https://artifacthub.io/
-            project: sandbox
+            homepage_url: https://artifacthub.io
+            project: incubating
             repo_url: https://github.com/artifacthub/hub
             logo: artifact-hub.svg
             twitter: https://twitter.com/cncfartifacthub
             crunchbase: https://www.crunchbase.com/organization/cloud-native-computing-foundation
             extra:
               accepted: '2020-06-25'
+              incubating: '2024-05-30'
               annual_review_url: https://github.com/cncf/toc/pull/681
               annual_review_date: '2021-06-23'
               dev_stats_url: https://artifacthub.devstats.cncf.io/