Reuse #12384's changelog.

David Robertson · David Robertson · commit 67c222319b2d · 2022-04-06T17:09:40.000+01:00
diff --git a/changelog.d/12400.misc b/changelog.d/12400.misc
@@ -0,0 +1 @@
+Make missing `importlib_metadata` dependency explicit.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Make missing `importlib_metadata` dependency explicit.