Release: v0.1.21 (#467)

## What's Changed
* feat: establish robust evaluation framework for workflow benchmarks by
@cocosheng-g in
#457
* fix: add a plan execution workflow for gemini-invoke workflow by
@cynthialong0-0 in
#465
* fix: update README.md for plan-execute workflow added in #465 by
@cynthialong0-0 in
#466

## New Contributors
* @cocosheng-g made their first contribution in
#457
* @cynthialong0-0 made their first contribution in
#465

**Full Changelog**:
v0.1.20...v0.1.21

Author: google-github-actions-bot

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "run-gemini-cli",
-  "version": "0.1.20",
+  "version": "0.1.21",
   "description": "This works with our versioning tools, this is NOT an NPM repo",
   "scripts": {
     "build": "echo \"No build required for composite action\"",