[helm] Fix version and the workflow (#2880)

.github/workflows/release-helm.yaml

@@ -29,6 +29,7 @@ jobs:
           git fetch origin
           git stash
           git checkout -b gh-pages origin/gh-pages
+          git pull
           helm repo index .
           git add -f ${MSG##*/} index.yaml
           git commit -m "release ${VERSION}"

charts/kafka-ui/Chart.yaml

@@ -2,6 +2,6 @@ apiVersion: v2
 name: kafka-ui
 description: A Helm chart for kafka-UI
 type: application
-version: 0.4.6
+version: 0.4.5
 appVersion: v0.4.0
 icon: https://github.com/provectus/kafka-ui/raw/master/documentation/images/kafka-ui-logo.png