Bump actions/cache from 3 to 4 (#143)

Author: dependabot[bot]

.github/workflows/test.yaml

@@ -23,7 +23,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -60,7 +60,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}