Delete old releases (#21)

Releasing the wheels has been failing for a month now
https://github.com/llvm/torch-mlir-release/actions/runs/19032410905/job/54349329471#step:7:30
due to the GH limit that each release artifact can only have a maximum
of 1000 artifacts (some discussion captured here
https://github.com/orgs/community/discussions/165616).

This PR has two changes:

1. I have added a CI that will remove assets older than 60 days -- we
release 4 assets daily (3 for linux + 1 for windows). So technically
this can be increased to 250 days but I don't know if there is a need to
keep assets that old. I have chosen 60 days since I recall seeing
somewhere that's how long PyTorch keep their nightly releases but I
couldn't find that now.

An alternative to keeping all the assets will probably be to release the
assets with new name daily but seems overkill to me. Open to other
suggestions as well.

2. Added the `artifactErrorsFailBuild` flag on the release CIs which I
think will cause the builds to fail if the upload step fails --
currently the build doesn't fail which is why I think we didn't notice
this earlier.

Author: sahas3

.github/workflows/buildReleaseAndPublish.yml

@@ -73,3 +73,4 @@ jobs:
           allowUpdates: true
           replacesArtifacts: true
           makeLatest: true
+          artifactErrorsFailBuild: true

.github/workflows/buildReleaseAndPublishWindows.yml

@@ -80,3 +80,4 @@ jobs:
           allowUpdates: true
           replacesArtifacts: true
           makeLatest: true
+          artifactErrorsFailBuild: true

.github/workflows/deleteOldReleases.yml

@@ -0,0 +1,35 @@
+name: Delete Old Releases
+
+on:
+  schedule:
+    - cron: '0 10 * * *'  # Daily at 10:00 UTC which is 2:00 AM PST (UTC-8)
+  workflow_dispatch:
+
+jobs:
+  delete_release_assets:
+    runs-on: ubuntu-24.04
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Delete old release assets
+        # To use GitHub CLI in a GitHub Actions workflow, set the GH_TOKEN environment variable
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        # Don't run this in everyone's forks on schedule but allow to run via dispatch.
+        if: ${{ github.repository_owner == 'llvm' || github.event_name != 'schedule' }}
+        run: |
+
+          # Define cutoff in seconds with 60 days as the threshold (60 * 24 * 60 * 60 = 5184000)
+          CUTOFF_SECONDS=5184000
+
+          # Find assets older than 60 days in the 'dev-wheels' release and pipe their names to xargs for deletion.
+          gh release view dev-wheels --repo ${{ github.repository }} --json assets | \
+            jq -r --argjson cutoff_seconds "$CUTOFF_SECONDS" '
+              (now - $cutoff_seconds) as $cutoff |
+              # Iterate over the assets in the single release
+              .assets[] |
+              # Select assets older than the cutoff
+              select((.createdAt | fromdateiso8601) < $cutoff) |
+              .name
+            ' | xargs -r gh release delete-asset dev-wheels