Fix release-drafter silent failure on PR events (#42)

The release-drafter v6 action was failing silently on pull_request events
because it tried to query commit history using `refs/pull/XX/merge` as the
target commitish, which the GraphQL API cannot resolve.

Changes:
- Remove duplicate `pull_request` event (keep only `pull_request_target`)
- Add `disable-releaser` condition to skip release drafting on PR events

Now:
- push to main: Full release drafting runs
- pull_request_target: Only autolabeler runs (no GraphQL query failure)

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

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: ElanHasson

.github/workflows/release-drafter.yml

@@ -4,8 +4,6 @@ on:
   push:
     branches:
       - main
-  pull_request:
-    types: [opened, reopened, synchronize]
   pull_request_target:
     types: [opened, reopened, synchronize]
 
@@ -22,5 +20,8 @@ jobs:
       - uses: release-drafter/release-drafter@v6
         with:
           config-name: release-drafter.yml
+          # Only run release drafting on push to main, not on PR events
+          # PR events only run the autolabeler
+          disable-releaser: ${{ github.event_name == 'pull_request_target' }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}