docs(argo-cd): mention declarative set up for Argo-CD (#1037)

* docs(argo-cd): mention declarative set up for Argo-CD

* docs: Explain how you can avoid setting some Helm values like configs.repositories via the declarative set up with secrets.

Signed-off-by: cyril.cros <cyril.cros@polytechnique.edu>

Co-authored-by: Marko Bevc <marko.bevc@gmail.com>

* bumped appVersion / image to v1.2.0 (#1039)

Signed-off-by: lukasz.peplinski <lukasz.peplinski@tensquaregames.com>

Co-authored-by: lukasz.peplinski <lukasz.peplinski@tensquaregames.com>
Signed-off-by: cyril.cros <cyril.cros@polytechnique.edu>

* docs: Add README section also to README.md.gotmpl and bump chart version

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

Co-authored-by: cyril.cros <cyril.cros@polytechnique.edu>
Co-authored-by: Marko Bevc <marko.bevc@gmail.com>
Co-authored-by: lukpep <lukpep@gmail.com>
Co-authored-by: lukasz.peplinski <lukasz.peplinski@tensquaregames.com>
Co-authored-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

charts/argo-cd/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: v2.1.7
 description: A Helm chart for ArgoCD, a declarative, GitOps continuous delivery tool for Kubernetes.
 name: argo-cd
-version: 3.27.0
+version: 3.27.1
 home: https://github.com/argoproj/argo-helm
 icon: https://argo-cd.readthedocs.io/en/stable/assets/logo.png
 keywords:
@@ -21,4 +21,4 @@ dependencies:
     condition: redis-ha.enabled
 annotations:
   artifacthub.io/changes: |
-    - "[Added]: Support for additional labels"
+    - "[Added]: Mention declarative set up for Argo CD in README.md"