Use a regex to match --state-values-set-string arguments (#1902)

Signed-off-by: Guillaume Le Blanc <gleblanc@proton.me>

test/integration/test-cases/cli-overwrite-environment-values/input/values.yaml.gotmpl

@@ -1,2 +1,5 @@
 image:
-  tag: {{ .Values.ns }}
+  tag: {{ .Values.imageTag }}
+
+podAnnotations:
+  zone: {{ .Values.zone }}

test/integration/test-cases/cli-overwrite-environment-values/output/output_v1.yaml

@@ -51,6 +51,7 @@ spec:
         app.kubernetes.io/instance: test
         app.kubernetes.io/managed-by: Helm
       annotations:
+        zone: "zone1,zone2"
     spec:
       
       automountServiceAccountToken: false
@@ -75,7 +76,7 @@ spec:
       initContainers:
       containers:
         - name: nginx
-          image: docker.io/bitnami/nginx:test3
+          image: docker.io/bitnami/nginx:1.23.3
           imagePullPolicy: "IfNotPresent"
           env:
             - name: BITNAMI_DEBUG