chore: fix broken action

.github/workflows/build.yml

@@ -29,14 +29,17 @@ jobs:
     - name: Extract Branch
       id: extract_branch
       run: |
-          $branch_name = 'main'
-          $commit_messages = (echo "${{ toJSON(github.event.commits.*.message) }}")
-          
-          if ($commit_messages -match 'build\(([^)]+)\):') {
-            $branch_name = $matches[1]
-          }
-          
-          echo "branch_name=$branch_name" >> $GITHUB_OUTPUT
+        $branch_name = 'main'
+        $commit_messages = ${{ github.event.commits }}
+        
+        foreach ($commit in $commit_messages) {
+            if ($commit.message -match 'build\(([^)]+)\):') {
+                $branch_name = $matches[1]
+                break
+            }
+        }
+        
+        echo "branch_name=$branch_name" >> $GITHUB_OUTPUT
 
     - name: Setup MSBuild
       uses: microsoft/[email protected]