⬆️ Bump @percy/sdk-utils from 1.16.0 to 1.21.0 (#612)

Bumps [@percy/sdk-utils](https://github.com/percy/cli/tree/HEAD/packages/sdk-utils) from 1.16.0 to 1.21.0.
- [Release notes](https://github.com/percy/cli/releases)
- [Commits](https://github.com/percy/cli/commits/v1.21.0/packages/sdk-utils)

---
updated-dependencies:
- dependency-name: "@percy/sdk-utils"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

yarn.lock

@@ -515,9 +515,9 @@
   integrity sha512-qKKSFP25X+a50vpjUSolI8WSQ2YAunS6K4brdTRemgvc48Wlkv3541SP8iMK5BAy3Nn4u0KRiwkstvyRr1tXlA==
 
 "@percy/sdk-utils@^1.3.1":
-  version "1.16.0"
-  resolved "https://registry.yarnpkg.com/@percy/sdk-utils/-/sdk-utils-1.16.0.tgz#d5076d83701e9dad9383283877e63f433165d051"
-  integrity sha512-/nPyK4NCjFGYNVQ7vOivfuEYveOJhA4gWzB7w2PjCkw/Y3kCtu+axRpUiDPEybTz2H6RTvr+I526DbtUYguqVw==
+  version "1.21.0"
+  resolved "https://registry.yarnpkg.com/@percy/sdk-utils/-/sdk-utils-1.21.0.tgz#57b2ce73e7ea9a86e9f69d40e89f56f8dd294476"
+  integrity sha512-ZI6QbIhMZvE3P73ar7aeXcjSk8/czlS7h55QBynoJNorwimq5xed1CGPHu00uQsCO6dXeEKTfxQcqbCypRE6Hw==
 
 "@sinclair/typebox@^0.25.16":
   version "0.25.24"