Add changelog for DWO 0.38.0

Signed-off-by: dkwon17 <[email protected]>

Author: dkwon17

CHANGELOG.md

@@ -1,4 +1,9 @@
 # DevWorkspace Operator Changelog
+# v0.38.0
+## Bug Fixes & Improvements
+- Set readOnlyRootFilesystem for deployments to true [#1534](https://github.com/devfile/devworkspace-operator/pull/1534)
+- Make container status check less restrictive [#1528](https://github.com/devfile/devworkspace-operator/pull/1528)
+- Increase default per-workspace PVC size from 5Gi to 10Gi [#1514](https://github.com/devfile/devworkspace-operator/pull/1514)
 
 # v0.37.0
 ## Features