Drop Python 3.7 support

CHANGELOG.md

@@ -15,6 +15,7 @@
 * Disabled file logging in Docker image by default.
   * If you want to enable it, set the `filename` in the file log handler to a
     path that is writable, then add `"file"` back to `logging.root.handlers`.
+* Dropped Python 3.7 support.
 
 [MSC2246]: https://github.com/matrix-org/matrix-spec-proposals/pull/2246
 

setup.py

@@ -51,7 +51,7 @@ setuptools.setup(
 
     install_requires=install_requires,
     extras_require=extras_require,
-    python_requires="~=3.7",
+    python_requires="~=3.8",
 
     classifiers=[
         "Development Status :: 4 - Beta",