fix: increase prod Helm deploy timeout to 10m

5m was insufficient for the prod cluster to pull GHCR images and
get the API and Postgres pods ready, causing the deploy to time out
with InProgress (not crashing) pods.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: toddaheath

.github/workflows/deploy-prod.yml

@@ -99,4 +99,4 @@ jobs:
             --set ui.image.repository=${{ env.REGISTRY }}/${{ github.repository_owner }}/shed-builder-ui \
             --set ui.image.tag=${{ needs.build-and-push.outputs.image-tag }} \
             --set postgres.password=${{ secrets.DB_PASSWORD }} \
-            --wait --timeout 5m
+            --wait --timeout 10m