fix: wrap github MCP config with mcpServers in issue-triage workflow

Update the MCP configuration structure to properly wrap the github
server configuration within an mcpServers object, matching the
expected format for MCP config files.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/issue-triage.yml

@@ -23,18 +23,20 @@ jobs:
           mkdir -p /tmp/mcp-config
           cat > /tmp/mcp-config/mcp-servers.json << 'EOF'
           {
-            "github": {
-              "command": "docker",
-              "args": [
-                "run",
-                "-i",
-                "--rm",
-                "-e",
-                "GITHUB_PERSONAL_ACCESS_TOKEN",
-                "ghcr.io/github/github-mcp-server:sha-7aced2b"
-              ],
-              "env": {
-                "GITHUB_PERSONAL_ACCESS_TOKEN": "${{ secrets.GITHUB_TOKEN }}"
+            "mcpServers": {
+              "github": {
+                "command": "docker",
+                "args": [
+                  "run",
+                  "-i",
+                  "--rm",
+                  "-e",
+                  "GITHUB_PERSONAL_ACCESS_TOKEN",
+                  "ghcr.io/github/github-mcp-server:sha-7aced2b"
+                ],
+                "env": {
+                  "GITHUB_PERSONAL_ACCESS_TOKEN": "${{ secrets.GITHUB_TOKEN }}"
+                }
               }
             }
           }