Use recent go versions in test workflow (#519)

Signed-off-by: Sylvain Rabot <sylvain@abstraction.fr>

.github/workflows/test.yml

@@ -4,17 +4,17 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.15.x, 1.16.x]
+        go-version: [1.18.x, 1.19.x]
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
     - name: Install Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
         go-version: ${{ matrix.go-version }}
     - name: Checkout code
-      uses: actions/checkout@v2
-    - uses: actions/cache@v3.0.5
+      uses: actions/checkout@v3
+    - uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}