release: 4.7.0 (#5546)

* docs: update MAINTAINING

* refactor: use branch name in release-prep

This makes a minor improvement to the `release-prep.sh` script to grab
the version to update to from the branch name.

* chore(release): bump version to 4.7.0

* fixup: bump version

* docs: use latest instead of version

* fixup: bump Chart version

* chore: update CHANGELOG

* chore: add license to test package.json

* chore: bump @coder/logging to 3.0.0

* fix: change level to Warn

test/e2e/extensions/test-extension/package.json

@@ -3,6 +3,7 @@
   "description": "code-server test extension",
   "version": "0.0.1",
   "publisher": "coder",
+  "license": "MIT",
   "activationEvents": [
     "onStartupFinished"
   ],