ci: fix workflows

.github/workflows/backend-tests.yml

@@ -19,9 +19,9 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
-          go-version: '1.24'
+          go-version-file: apps/backend/go.mod
           cache-dependency-path: apps/backend/go.sum
 
       - name: Download dependencies
@@ -30,13 +30,16 @@ jobs:
       - name: Verify dependencies
         run: go mod verify
 
+      - name: Build
+        run: go build -v ./cmd/kandev
+
       - name: Run go vet
         run: go vet ./...
 
       - name: Run golangci-lint
-        uses: golangci/golangci-lint-action@v6
+        uses: golangci/golangci-lint-action@v9
         with:
-          version: v1.61.0
+          version: v2.6
           args: ./...
           working-directory: apps/backend
 
@@ -69,26 +72,3 @@ jobs:
             apps/backend/coverage.out
             apps/backend/test-output.txt
           retention-days: 30
-
-  build:
-    name: Build Backend
-    runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: apps/backend
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Set up Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: '1.24'
-          cache-dependency-path: apps/backend/go.sum
-
-      - name: Download dependencies
-        run: go mod download
-
-      - name: Build
-        run: go build -v ./cmd/kandev