chore: use the latest versions of the actions

We were getting warnings about unsupported versions.

Author: plumpy

.github/workflows/integration-linux.yml

@@ -18,15 +18,15 @@ jobs:
   test:
     runs-on: linux-x64-latest-more-storage
     steps:
-    - uses: actions/setup-go@v2
+    - uses: actions/setup-go@v5
       with:
         go-version: ^1.17
 
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-gopkgmod-${{ hashFiles('**/go.sum') }}