Updated GitHub retry action.

Author: akb825

.github/workflows/main.yml

@@ -187,7 +187,7 @@ jobs:
       shell: bash
       working-directory: "${{ github.workspace }}"
     - name: Download boost
-      uses: nick-fields/retry@v2
+      uses: nick-fields/retry@v4
       with:
         timeout_minutes: 10
         max_attempts: 5