fix: Downgrade Go version from 1.25 to 1.24 in go.mod

Author: kyoungho

.github/workflows/ci.yml

@@ -57,7 +57,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        go-version: ['1.20', '1.21']
+        go-version: ['1.25']
 
     steps:
     - name: Checkout code
@@ -104,7 +104,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v4
       with:
-        go-version: '1.21'
+        go-version: '1.25'
 
     - name: Run golangci-lint
       uses: golangci/golangci-lint-action@v3