chore(deps-dev): bump @polymer/polymer from 3.5.1 to 3.5.2

Bumps [@polymer/polymer](https://github.com/Polymer/polymer) from 3.5.1 to 3.5.2.
- [Release notes](https://github.com/Polymer/polymer/releases)
- [Changelog](https://github.com/Polymer/polymer/blob/master/CHANGELOG.md)
- [Commits](Polymer/polymer@v3.5.1...v3.5.2)

---
updated-dependencies:
- dependency-name: "@polymer/polymer"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

yarn.lock

@@ -8,9 +8,9 @@
   integrity sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ==
 
 "@polymer/polymer@^3.4.1":
-  version "3.5.1"
-  resolved "https://registry.yarnpkg.com/@polymer/polymer/-/polymer-3.5.1.tgz#4b5234e43b8876441022bcb91313ab3c4a29f0c8"
-  integrity sha512-JlAHuy+1qIC6hL1ojEUfIVD58fzTpJAoCxFwV5yr0mYTXV1H8bz5zy0+rC963Cgr9iNXQ4T9ncSjC2fkF9BQfw==
+  version "3.5.2"
+  resolved "https://registry.yarnpkg.com/@polymer/polymer/-/polymer-3.5.2.tgz#af0e7e13976df53ace6728e841121c36aca351de"
+  integrity sha512-fWwImY/UH4bb2534DVSaX+Azs2yKg8slkMBHOyGeU2kKx7Xmxp6Lee0jP8p6B3d7c1gFUPB2Z976dTUtX81pQA==
   dependencies:
     "@webcomponents/shadycss" "^1.9.1"