archive oasdiff before script runs

Author: bc-devrev

.github/workflows/changelog.yml

@@ -41,6 +41,11 @@ jobs:
         revision: 'head/fern/apis/beta/openapi-beta.yaml'  
         format: text
         output-to-file: 'temp/beta/${{ steps.date.outputs.date }}_oasdiff.md'
+    - name: Archive changelogs
+      uses: actions/upload-artifact@v4
+      with:
+        name: changelog-${{ steps.date.outputs.date }}
+        path: temp/**
     - name: Prompt
       run: |
         python changelog.py --date ${{ steps.date.outputs.date }}
@@ -49,8 +54,3 @@ jobs:
         git add fern/apis/*/changelog
         git commit -m "generated by Claude"
         git push
-    - name: Archive changelogs
-      uses: actions/upload-artifact@v4
-      with:
-        name: changelog-${{ steps.date.outputs.date }}
-        path: temp/**