NSIS build fix (#4698)

Author: marchcat

.github/workflows/build.yaml

@@ -310,7 +310,7 @@ jobs:
     steps:
       - name: Sign and package Windows viewer
         if: env.AZURE_KEY_VAULT_URI && env.AZURE_CERT_NAME && env.AZURE_CLIENT_ID && env.AZURE_CLIENT_SECRET && env.AZURE_TENANT_ID
-        uses: secondlife/viewer-build-util/sign-pkg-windows@v2
+        uses: secondlife/viewer-build-util/sign-pkg-windows@v2.0.4
         with:
           vault_uri: "${{ env.AZURE_KEY_VAULT_URI }}"
           cert_name: "${{ env.AZURE_CERT_NAME }}"