Bump version and update changelog for 0.8.0 release (#2053)

CHANGELOG.md

@@ -9,6 +9,8 @@ Canonical reference for changes, improvements, and bugfixes for Boundary.
 * controller: new health endpoint ([PR](https://github.com/hashicorp/boundary/pull/1882)).
 * Improve response time for listing sessions and targets.
   [PR](https://github.com/hashicorp/boundary/pull/2049)
+* ui: Add support for worker filters in targets.
+* ui: Add manual refresh button in sessions list.
 
 ### Bug Fixes
 * worker: create new error to prevent `event.newError: missing error: invalid parameter` and handle session cancel 

internal/ui/VERSION

@@ -1,4 +1,4 @@
-a8ae8d28df4af8d2c72e8a67409d439976b24031 fix: 🐛 Reduce extra padding in tables (#1091)
+8545697b430a432bd50c1bde6a080759f803f157 Add toolbar regions to align refresh button to the right (#1098)
 # This file determines the version of the UI to embed in the boundary binary.
 # Update this file by running 'make update-ui-version' from the root of this repo.
 # Set UI_COMMITISH when running the above target to update to a specific version.