Update actions/cache action to v4

Author: renovate[bot]

.github/workflows/test.yml

@@ -24,7 +24,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Cache Go modules
-        uses: actions/cache@v3.3.3
+        uses: actions/cache@v4.1.1
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-${{ env.GO_VERSION }}-go-${{ hashFiles('**/go.sum') }}
@@ -50,7 +50,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Cache Go modules
-        uses: actions/cache@v3.3.3
+        uses: actions/cache@v4.1.1
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-${{ env.GO_VERSION }}-go-${{ hashFiles('**/go.sum') }}