ci: bump actions to latest majors + gate tests on lint

- actions/checkout v4→v6, actions/setup-go v5→v6, golangci-lint-action
  v7→v9 (clears the Node.js 20 deprecation — all now run on Node 24).
- Reorder so Lint runs first; the 3-OS Test matrix now 'needs: lint',
  so tests only run once lint passes (fail-fast, saves CI minutes).

Author: nixrajput

.github/workflows/ci.yml

@@ -9,33 +9,34 @@ permissions:
   contents: read
 
 jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
+        with:
+          go-version: stable
+          cache: true
+      - uses: golangci/golangci-lint-action@v9
+        with:
+          version: v2.12.2
+
   test:
     name: Test (${{ matrix.os }})
+    needs: lint
     strategy:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
         with:
           go-version: stable
           cache: true
       - name: go vet
         run: go vet ./...
       - name: go test
         run: go test ./...
-
-  lint:
-    name: Lint
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
-        with:
-          go-version: stable
-          cache: true
-      - uses: golangci/golangci-lint-action@v7
-        with:
-          version: v2.12.2