ci: address chart release error (ClickHouse#149)

Address error  `Error: error creating GitHub release hdx-oss-v2-0.8.4: POST https://api.github.com/repos/hyperdxio/helm-charts/releases: 422 Validation Failed [{Resource:Release Field:tag_name Code:already_exists Message:}]`

Author: wrn14897

.github/workflows/release.yml

@@ -46,5 +46,7 @@ jobs:
       - name: Run chart-releaser job
         if: steps.changesets.outputs.hasChangesets == 'false'
         uses: helm/chart-releaser-action@v1.7.0
+        with:
+          skip_existing: true
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"