workflows: build-torch: don't build on dependabot upgrade

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>

Author: threexc

.github/workflows/build-torch.yml

@@ -35,6 +35,9 @@ env:
 
 jobs:
   docker-builds:
+    # Dependabot action bumps shouldn't burn a multi-hour riscv64 build; humans
+    # editing this workflow still trigger it via the pull_request paths filter.
+    if: github.event_name != 'pull_request' || github.actor != 'dependabot[bot]'
     runs-on: ubuntu-24.04
     timeout-minutes: 360  # 6h
     permissions: