fix(ci): install golangci-lint v2 (config requires version: 2)

Author: xaionaro@dx.center

.github/workflows/ci.yml

@@ -95,8 +95,8 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-go-
 
-      - name: Install golangci-lint
-        run: go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+      - name: Install golangci-lint v2
+        run: go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
 
       - name: Lint (tools)
         run: golangci-lint run --build-tags="" ./tools/...