Upgrade actions/setup-go

Author: dveeden

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
         run: |
           sudo apt-get install -y make gcc
       - name: Install Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v4
         with:
           go-version: ${{ matrix.go }}
       - name: Checkout code