Update latest_deps workflow to migrate poetry --no-dev -> --without dev (#18617)

.github/workflows/latest_deps.yml

@@ -60,7 +60,7 @@ jobs:
       - run: poetry run pip list > before.txt
       # Upgrade all runtime dependencies only. This is intended to mimic a fresh
       # `pip install matrix-synapse[all]` as closely as possible.
-      - run: poetry update --no-dev
+      - run: poetry update --without dev
       - run: poetry run pip list > after.txt && (diff -u before.txt after.txt || true)
       - name: Remove unhelpful options from mypy config
         run: sed -e '/warn_unused_ignores = True/d' -e '/warn_redundant_casts = True/d' -i mypy.ini

changelog.d/18617.misc

@@ -0,0 +1 @@
+Unbreak "Latest dependencies" workflow by using the `--without dev` poetry option instead of removed `--no-dev`.

pyproject.toml

@@ -224,7 +224,7 @@ pydantic = ">=1.7.4, <3"
 # https://github.com/python-poetry/poetry/issues/6154). Both `pip install` and
 # `poetry build` do the right thing without this explicit dependency.
 #
-# This isn't really a dev-dependency, as `poetry install --no-dev` will fail,
+# This isn't really a dev-dependency, as `poetry install --without dev` will fail,
 # but the alternative is to add it to the main list of deps where it isn't
 # needed.
 setuptools_rust = ">=1.3"

synapse/util/check_dependencies.py

@@ -74,7 +74,7 @@ def _is_dev_dependency(req: Requirement) -> bool:
 def _should_ignore_runtime_requirement(req: Requirement) -> bool:
     # This is a build-time dependency. Irritatingly, `poetry build` ignores the
     # requirements listed in the [build-system] section of pyproject.toml, so in order
-    # to support `poetry install --no-dev` we have to mark it as a runtime dependency.
+    # to support `poetry install --without dev` we have to mark it as a runtime dependency.
     # See discussion on https://github.com/python-poetry/poetry/issues/6154 (it sounds
     # like the poetry authors don't consider this a bug?)
     #