[bitnami/*] rename workflow file and remove unnecessary '/' (#12739)

Signed-off-by: Fran Mulero <fmulero@vmware.com>

Signed-off-by: Fran Mulero <fmulero@vmware.com>

.github/workflows/assign-labels.yml → .github/workflows/assign-asset-label.yml

@@ -20,7 +20,7 @@ jobs:
           files_changed_data=$(curl -s --header 'authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' -X GET -G "$URL")
           files_changed="$(echo $files_changed_data | jq -r '.[] | .filename')"
           # Adding || true to avoid "Process exited with code 1" errors
-          assets=($(echo "$files_changed" | xargs dirname | sed -nr "s|bitnami/([^/]*)/.*|\1|p" | sort | uniq || true))
+          assets=($(echo "$files_changed" | xargs dirname | sed -nr "s|bitnami/([^/]*).*|\1|p" | sort | uniq || true))
 
           if [[ "${#assets[@]}" -ne "1" ]]; then
             echo "::set-output name=result::skip"