Bump yarn from 1.22.19 to 1.22.21

Bumps [yarn](https://github.com/yarnpkg/yarn) from 1.22.19 to 1.22.21.
- [Release notes](https://github.com/yarnpkg/yarn/releases)
- [Changelog](https://github.com/yarnpkg/yarn/blob/master/CHANGELOG.md)
- [Commits](yarnpkg/yarn@v1.22.19...v1.22.21)

---
updated-dependencies:
- dependency-name: yarn
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -3,7 +3,7 @@
   "private": "true",
   "dependencies": {
     "sass": "^1.64.0",
-    "yarn": "^1.22.19"
+    "yarn": "^1.22.21"
   },
   "scripts": {
     "build:css": "sass ./app/assets/stylesheets/application.sass.scss ./app/assets/builds/application.css --no-source-map --load-path=node_modules"

yarn.lock

@@ -123,7 +123,7 @@ to-regex-range@^5.0.1:
   dependencies:
     is-number "^7.0.0"
 
-yarn@^1.22.19:
-  version "1.22.19"
-  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.22.19.tgz#4ba7fc5c6e704fce2066ecbfb0b0d8976fe62447"
-  integrity sha512-/0V5q0WbslqnwP91tirOvldvYISzaqhClxzyUKXYxs07yUILIs5jx/k6CFe8bvKSkds5w+eiOqta39Wk3WxdcQ==
+yarn@^1.22.21:
+  version "1.22.21"
+  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.22.21.tgz#1959a18351b811cdeedbd484a8f86c3cc3bbaf72"
+  integrity sha512-ynXaJsADJ9JiZ84zU25XkPGOvVMmZ5b7tmTSpKURYwgELdjucAOydqIOrOfTxVYcNXe91xvLZwcRh68SR3liCg==