.github/workflows/ci.yml: update outdated actions that github warns n…

…eed updating

Signed-off-by: Tomás Senart <tsenart@gmail.com>

.github/workflows/ci.yml

@@ -19,10 +19,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           go-version: '1.20'
 
@@ -62,10 +62,10 @@ jobs:
           - 'openbsd/arm64'
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           go-version: '1.20'
 
@@ -93,7 +93,7 @@ jobs:
           fi
 
       - name: Upload Artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: vegeta_${{ steps.setup_env.outputs.goos }}_${{ steps.setup_env.outputs.goarch }}
           path: |
@@ -107,12 +107,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - name: Download Artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
 
       - name: Create checksums and sign them
         id: sign