fix: add missing newlines at end of workflow files

This fixes YAML parsing errors that caused workflow failures

Author: Seungwoo321

.github/workflows/integrate-develop.yml

@@ -154,4 +154,4 @@ jobs:
           
           echo "✅ Updated PR #${PR_NUMBER} with ${COMMIT_COUNT} new commits"
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release-staging.yml

@@ -259,4 +259,4 @@ EOF
           gh pr edit $PR_NUMBER \
             --add-label "needs-review"
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release-tag.yml

@@ -182,4 +182,4 @@ EOF
           echo "${{ steps.publish.outputs.published_packages }}" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "### 🔗 View Release" >> $GITHUB_STEP_SUMMARY
-          echo "[GitHub Release](https://github.com/${{ github.repository }}/releases/tag/${{ steps.tag-info.outputs.tag }})" >> $GITHUB_STEP_SUMMARY
+          echo "[GitHub Release](https://github.com/${{ github.repository }}/releases/tag/${{ steps.tag-info.outputs.tag }})" >> $GITHUB_STEP_SUMMARY

.github/workflows/update-version.yml

@@ -244,4 +244,4 @@ jobs:
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "### 🔄 Sync PRs Created" >> $GITHUB_STEP_SUMMARY
           echo "- PR to develop branch" >> $GITHUB_STEP_SUMMARY
-          echo "- PR to staging branch" >> $GITHUB_STEP_SUMMARY
+          echo "- PR to staging branch" >> $GITHUB_STEP_SUMMARY