Remove support for python 3.8 (#17908)

### Pull Request Checklist

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* [X] Pull request is based on the develop branch
* [X] Pull request includes a [changelog
file](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#changelog).
The entry should:
- Be a short description of your change which makes sense to users.
"Fixed a bug that prevented receiving messages from other servers."
instead of "Moved X method from `EventStore` to `EventWorkerStore`.".
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* [X] [Code
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---------

Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>

1 files changed, 14 insertions, 8 deletions

diff --git a/tests/util/test_check_dependencies.py b/tests/util/test_check_dependencies.py

index 13a4e6ddaa..c052ba2b75 100644
--- a/tests/util/test_check_dependencies.py
+++ b/tests/util/test_check_dependencies.py
@@ -109,10 +109,13 @@ class TestDependencyChecker(TestCase):
 
     def test_checks_ignore_dev_dependencies(self) -> None:
         """Both generic and per-extra checks should ignore dev dependencies."""
-        with patch(
-            "synapse.util.check_dependencies.metadata.requires",
-            return_value=["dummypkg >= 1; extra == 'mypy'"],
-        ), patch("synapse.util.check_dependencies.RUNTIME_EXTRAS", {"cool-extra"}):
+        with (
+            patch(
+                "synapse.util.check_dependencies.metadata.requires",
+                return_value=["dummypkg >= 1; extra == 'mypy'"],
+            ),
+            patch("synapse.util.check_dependencies.RUNTIME_EXTRAS", {"cool-extra"}),
+        ):
             # We're testing that none of these calls raise.
             with self.mock_installed_package(None):
                 check_requirements()
@@ -141,10 +144,13 @@ class TestDependencyChecker(TestCase):
 
     def test_check_for_extra_dependencies(self) -> None:
         """Complain if a package required for an extra is missing or old."""
-        with patch(
-            "synapse.util.check_dependencies.metadata.requires",
-            return_value=["dummypkg >= 1; extra == 'cool-extra'"],
-        ), patch("synapse.util.check_dependencies.RUNTIME_EXTRAS", {"cool-extra"}):
+        with (
+            patch(
+                "synapse.util.check_dependencies.metadata.requires",
+                return_value=["dummypkg >= 1; extra == 'cool-extra'"],
+            ),
+            patch("synapse.util.check_dependencies.RUNTIME_EXTRAS", {"cool-extra"}),
+        ):
             with self.mock_installed_package(None):
                 self.assertRaises(DependencyException, check_requirements, "cool-extra")
             with self.mock_installed_package(old):