Bring in line with foundation DCO (#1875)

* bring in line with foundation DCO

* add changelog entry

---------

Co-authored-by: Josh Simmons <git@josh.tel>

CONTRIBUTING.md

@@ -155,11 +155,6 @@ include the line in your commit or pull request comment:
 Signed-off-by: Your Name <your@email.example.org>
 ```
 
-We accept contributions under a legally identifiable name, such as
-your name on government documentation or common-law names (names
-claimed by legitimate usage or repute). Unfortunately, we cannot
-accept anonymous contributions at this time.
-
 Git allows you to add this signoff automatically when using the `-s`
 flag to `git commit`, which uses the name and email set in your
 `user.name` and `user.email` git configs.

changelog.d/pr-1875.doc

@@ -0,0 +1 @@
+Drop the requirement for "real" or "legally identifiable" name in order to contribute, in line with updated Foundation policy.