Update Chart.yaml and changelog for 0.24.3 release

Author: cf-ci-bot-v2

charts/gitops-runtime/Chart.yaml

@@ -14,6 +14,8 @@ maintainers:
 annotations:
   artifacthub.io/alternativeName: "codefresh-gitops-runtime"
   artifacthub.io/changes: |-
+    - kind: changed
+      description: 'fix: app-proxy fails to report new and closed pr to product-components (#761)'
     - kind: changed
       description: '[gitops-operator]fix: promotions using pull requests do not resume after the pr has been merged (#753)'
     - kind: changed