ci: add Python 3.11 support to lint workflow

- Add matrix strategy to test both Python 3.9 and 3.11
- Configure appropriate dependency installation for each version
- Python 3.9: excludes MCP extras (not supported)
- Python 3.11: includes all extras for full coverage
- Aligns with existing test workflow pattern for consistency

Author: ryoppippi

.github/workflows/lint.yml

@@ -8,17 +8,25 @@ on:
 jobs:
   lint:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.11"]
+        include:
+          - python-version: "3.9"
+            sync-extras: "--all-extras --no-extra mcp"
+          - python-version: "3.11"
+            sync-extras: "--all-extras"
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Install uv
         uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
         with:
-          python-version: "3.9"
+          python-version: ${{ matrix.python-version }}
           enable-cache: true
 
       - name: Install dependencies
-        run: uv sync --all-extras --no-extra mcp
+        run: uv sync ${{ matrix.sync-extras }}
 
       - name: Run Ruff
         uses: astral-sh/ruff-action@0c50076f12c38c3d0115b7b519b54a91cb9cf0ad # v3.5.0