Go 1.26 and golangci-lint updates (#2146)

Keep Go 1.24 compatibility for now (by not using `wg.Go()`).

.github/workflows/lint.yml

@@ -20,10 +20,10 @@ jobs:
     - uses: actions/checkout@v6
     - uses: actions/setup-go@v6
       with:
-        go-version: 1.24.x
+        go-version: 1.26.x
     - run: go version
     - name: Run golangci-lint
-      uses: golangci/golangci-lint-action@v9
+      uses: golangci/golangci-lint-action@v9.2.0
       with:
-        version: v2.5.0
+        version: v2.10.1
         args: --verbose

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.24.x]
+        go-version: [1.24.x, 1.26.x]
         os: [ubuntu-latest, macos-latest, windows-latest, macos-14]
     runs-on: ${{ matrix.os }}
     steps: