.github: Update actions

Author: monstermunchkin

.github/workflows/golang-ci.yml

@@ -8,8 +8,8 @@ jobs:
       matrix:
         go: [ '1.23' ]
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-go@v2
+    - uses: actions/checkout@v4
+    - uses: actions/setup-go@v5
       with:
         go-version: ${{ matrix.go }}
     - name: Login to DockerHub