chore: Add workflow_dispatch to chart release workflow

Author: CDiezRodriguez

.github/workflows/chart-release-issuerservice.yaml

@@ -30,6 +30,7 @@ on:
       - 'charts/tractusx-issuerservice-memory'
     branches:
       - main
+  workflow_dispatch:
 
 jobs:
   release:
@@ -72,4 +73,4 @@ jobs:
         uses: helm/chart-releaser-action@cae68fefc6b5f367a0275617c9f83181ba54714f # v1.7.0
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
-          CR_SKIP_EXISTING: "true"
+          CR_SKIP_EXISTING: "true"