fix: update version for chart-releaser action (#887)

diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 8f7c1ae..311aa88 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -36,6 +36,7 @@
         uses: ./.github/actions/chart-releaser-action
         with:
           charts_dir: .
+          version: v1.8.1
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
           CR_SKIP_EXISTING: true