Update Chart.yaml and changelog for 0.26.1 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: 'chore: security fixes for k8s client in Argo Rollouts v1.7.2 (#987)'
     - kind: changed
       description: updated cli-v2 for fixing CVE-2024-25621 "github.com/containerd/containerd" (#994)
     - kind: changed