ci: update actions/setup-go to v4

This brings automatic build caches.

Author: dmke

.github/workflows/release.yml

@@ -28,7 +28,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Setup Go ${{ env.GO_VERSION }}
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v4
         with:
           go-version: ${{ env.GO_VERSION }}
 

.github/workflows/test.yml

@@ -19,21 +19,13 @@ jobs:
 
     steps:
       - name: Setup Go ${{ env.GO_VERSION }}
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v4
         with:
           go-version: ${{ env.GO_VERSION }}
 
       - name: Checkout code
         uses: actions/checkout@v3
 
-      - name: Cache Go modules
-        uses: actions/cache@v3.3.1
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-${{ env.GO_VERSION }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-${{ env.GO_VERSION }}-go-
-
       - name: Run tests
         run: make test
 
@@ -47,21 +39,13 @@ jobs:
 
     steps:
       - name: Setup Go ${{ env.GO_VERSION }}
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v4
         with:
           go-version: ${{ env.GO_VERSION }}
 
       - name: Checkout code
         uses: actions/checkout@v3
 
-      - name: Cache Go modules
-        uses: actions/cache@v3.3.1
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-${{ env.GO_VERSION }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-${{ env.GO_VERSION }}-go-
-
       - name: Run linter
         uses: golangci/golangci-lint-action@v3
         with: