Update CI for Python 3.11 and add newsfile.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: sandhose

.github/workflows/pipeline.yml

@@ -10,15 +10,15 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
-      - run: uv run ruff check sygnal/ tests/ stubs
-      - run: uv run ruff format --check sygnal/ tests/ stubs
+      - run: uv run ruff check sygnal/ tests/
+      - run: uv run ruff format --check sygnal/ tests/
 
   check-types-mypy:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
-      - run: uv run mypy sygnal/ tests/ stubs
+      - run: uv run mypy sygnal/ tests/
 
   run-unit-tests:
     name: Unit tests
@@ -35,13 +35,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: actions/setup-python@v6
-        with:
-          python-version: "3.8"
-      - name: Patch pyproject.toml to require oldest dependencies
-        run: |
-          sed --in-place=.bak -e '/requires-python/!s/>=/==/g' pyproject.toml
-          diff pyproject.toml.bak pyproject.toml || true
-      - name: Install Sygnal
-        run: python -m pip install -e .
-      - run: python -m pytest tests/
+      - uses: astral-sh/setup-uv@v5
+      - run: uv sync --resolution=lowest-direct --python=3.11
+      - run: uv run pytest tests/

changelog.d/456.misc

@@ -0,0 +1 @@
+Modernize dependencies, Dockerfile, and require Python >=3.11.

pyproject.toml

@@ -42,7 +42,6 @@ dev = [
     "towncrier>=18.6.0",
     "types-opentracing>=2.4.2",
     "types-pyyaml>=6.0.0",
-    "typing-extensions>=3.7.4",
     "pytest>=7.0",
     "pytest-asyncio>=1.0",
     "pytest-aiohttp>=1.0",