Update VS Code settings to use golangci-lint v2

We configure it to call the same binary that the new lint script also uses (see
beginning of the branch).

.vscode/settings.json

@@ -2,4 +2,8 @@
   "gopls": {
     "formatting.gofumpt": true,
   },
+  "go.alternateTools": {
+    "golangci-lint-v2": "${workspaceFolder}/.bin/golangci-lint",
+  },
+  "go.lintTool": "golangci-lint-v2",
 }