fix: remove unnecessary empty markdown link cleanup from workflows

- Remove sed command that was cleaning up empty markdown links
- Root cause has been fixed in release-it configuration
- Apply to both backend and frontend release workflows

Author: Lasim

.github/workflows/backend-release-pr.yml

@@ -74,8 +74,8 @@ jobs:
               END { print content }
             ' CHANGELOG.md)
             
-            # Clean up empty markdown links and remove empty lines
-            CLEAN_NOTES=$(echo "$RELEASE_NOTES" | sed 's/(\[\]([^)]*))//g' | sed '/^$/d')
+            # Remove empty lines
+            CLEAN_NOTES=$(echo "$RELEASE_NOTES" | sed '/^$/d')
             
             # Save to output
             echo "release_notes<<EOF" >> $GITHUB_OUTPUT
@@ -129,4 +129,4 @@ jobs:
       - name: Show PR link
         if: ${{ steps.cpr.outputs.pull-request-url }}
         run: |
-          echo "Backend Release v${{ steps.package-version.outputs.current-version}}' pull request - ${{ steps.cpr.outputs.pull-request-url }}"
+          echo "Backend Release v${{ steps.package-version.outputs.current-version}}' pull request - ${{ steps.cpr.outputs.pull-request-url }}"

.github/workflows/frontend-release-pr.yml

@@ -82,7 +82,7 @@ jobs:
               END { print content }
             ' CHANGELOG.md)
             
-            CLEAN_NOTES=$(echo "$RELEASE_NOTES" | sed 's/(\[\]([^)]*))//g' | sed '/^$/d')
+            CLEAN_NOTES=$(echo "$RELEASE_NOTES" | sed '/^$/d')
             
             echo "release_notes<<EOF" >> $GITHUB_OUTPUT
             echo "$CLEAN_NOTES" >> $GITHUB_OUTPUT
@@ -136,4 +136,4 @@ jobs:
       - name: Show PR link
         if: ${{ steps.cpr.outputs.pull-request-url }}
         run: |
-          echo "Frontend Release v${{ steps.package-version.outputs.current-version}}' pull request - ${{ steps.cpr.outputs.pull-request-url }}"
+          echo "Frontend Release v${{ steps.package-version.outputs.current-version}}' pull request - ${{ steps.cpr.outputs.pull-request-url }}"