Update github action modules (#22)

Signed-off-by: 1gtm <1gtm@appscode.com>

Author: 1gtm

.github/workflows/ci.yml

@@ -18,12 +18,12 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Set up Go 1.23
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v5
         with:
           go-version: '1.23'
 
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v1
+        uses: actions/checkout@v4
 
       - name: Run checks
         run: |