Update HISTORY.md

Author: jayqi

HISTORY.md

@@ -1,6 +1,6 @@
 # cloudpathlib Changelog
 
-## v0.9.0 (UNRELEASED)
+## v0.9.0 (2022-06-03)
  - Added `absolute` to `CloudPath` (does nothing as `CloudPath` is always absolute) ([PR #230](https://github.com/drivendataorg/cloudpathlib/pull/230))
  - Added `resolve` to `CloudPath` (does nothing as `CloudPath` is resolved in advance) ([Issue #151](https://github.com/drivendataorg/cloudpathlib/issues/151), [PR #230](https://github.com/drivendataorg/cloudpathlib/pull/230))
  - Added `relative_to` to `CloudPath` which returns a `PurePosixPath` ([Issue #149](https://github.com/drivendataorg/cloudpathlib/issues/149), [PR #230](https://github.com/drivendataorg/cloudpathlib/pull/230))