chore(deps): combine dependabot dependency updates (#504)

Python dependencies:
- uvicorn: 0.41.0 → 0.42.0
- litellm: 1.82.0 → 1.82.6
- authlib: 1.6.8 → 1.6.9
- fastmcp: 3.0.1 → 3.1.1
- pytest-asyncio: 1.2.0 → 1.3.0

GitHub Actions:
- astral-sh/setup-uv: v5.4.2 → v7.6.0
- rojopolis/spellcheck-github-actions: 0.59.0 → 0.60.0

NPM dependencies (app/):
- typescript-eslint: 8.53.0 → 8.57.0
- flatted: 3.3.3 → 3.4.2
- picomatch: 2.3.1 → 2.3.2 / 4.0.3 → 4.0.4

Replaces: #483, #484, #486, #487, #491, #493, #498, #499, #500, #501

Skipped major version bumps (require migration work):
- #488 vite 7→8, #489 react-dom 18→19
- #490 tailwind-merge 2→3, #492 tailwindcss 3→4

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: gkorland

.github/workflows/playwright.yml

@@ -33,7 +33,7 @@ jobs:
 
     # Install uv
     - name: Install uv
-      uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5.4.2
+      uses: astral-sh/setup-uv@37802adc94f370d6bfd71619e3f0bf239e1f3b78 # v7.6.0
       with:
         version: "0.7.12"
 

.github/workflows/pylint.yml

@@ -17,7 +17,7 @@ jobs:
         python-version: '3.12'
 
     - name: Install uv
-      uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5.4.2
+      uses: astral-sh/setup-uv@37802adc94f370d6bfd71619e3f0bf239e1f3b78 # v7.6.0
       with:
         version: "latest"
 

.github/workflows/spellcheck.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
       - name: Spellcheck
-        uses: rojopolis/spellcheck-github-actions@79c6662f156bc4faa184a458c39cd672783804b3 # 0.59.0
+        uses: rojopolis/spellcheck-github-actions@e3cd8e9aec4587ec73bc0e60745aafd45c37aa2e # 0.60.0
         with:
           config_path: .github/spellcheck-settings.yml
           task_name: Markdown

.github/workflows/tests.yml

@@ -37,7 +37,7 @@ jobs:
         python-version: '3.12'
 
     - name: Install uv
-      uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5.4.2
+      uses: astral-sh/setup-uv@37802adc94f370d6bfd71619e3f0bf239e1f3b78 # v7.6.0
       with:
         version: "0.7.12"