Bump staticcheck-action to v1.4.1

While at it, also removing the unmatched //lint line.

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["windows-latest", "ubuntu-latest", "macOS-latest"]
-        go: ["1.25.x"]
+        go: ["1.26.x"]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
@@ -19,8 +19,8 @@ jobs:
         with:
           go-version: ${{ matrix.go }}
       - run: "go test -race ./..."
-      - uses: dominikh/staticcheck-action@v1.4.0
+      - uses: dominikh/staticcheck-action@v1.4.1
         with:
-          version: "2026.1"
+          version: "2026.2"
           install-go: false
           cache-key: ${{ matrix.go }}