Update the golangci-lint workflow

I followed the instructions at https://github.com/golangci/golangci-lint-action.

Author: anacrolix

.github/workflows/golangci-lint.yml

@@ -0,0 +1,25 @@
+name: golangci-lint
+
+on:
+  pull_request:
+  push:
+
+permissions:
+  contents: read
+  pull-requests: read
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-go@v6
+        with:
+          go-version: stable
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v9
+        with:
+          version: latest
+          #args: -D errcheck,unused
+          only-new-issues: true