fix: remove redundant update-major-tag workflow that was incorrectly updating beta (#489)

The update-major-tag.yml workflow was:
1. Incorrectly updating the beta tag instead of major version tags
2. Redundant - release.yml already has an update-major-tag job that properly updates major version tags

Removing this workflow ensures:
- Beta tag stays at v0.0.63 and won't be automatically moved
- No duplicate major tag update logic
- Single source of truth for tag management in release.yml

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: Kashyap Murali <13315300+katchu11@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>

.github/workflows/update-major-tag.yml

@@ -1,24 +0,0 @@
-name: Update Beta Tag
-
-on:
-  release:
-    types: [published]
-
-jobs:
-  update-beta-tag:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: write
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Update beta tag
-        run: |
-          # Get the current release version
-          VERSION=${GITHUB_REF#refs/tags/}
-
-          # Update the beta tag to point to this release
-          git config user.name github-actions[bot]
-          git config user.email github-actions[bot]@users.noreply.github.com
-          git tag -fa beta -m "Update beta tag to ${VERSION}"
-          git push origin beta --force