Bump @rails/webpacker from 5.4.2 to 5.4.3 (#14948)

Bumps [@rails/webpacker](https://github.com/rails/webpacker) from 5.4.2 to 5.4.3.
- [Release notes](https://github.com/rails/webpacker/releases)
- [Changelog](https://github.com/rails/webpacker/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rails/webpacker/compare/v5.4.2...v5.4.3)

---
updated-dependencies:
- dependency-name: "@rails/webpacker"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

package.json

@@ -142,7 +142,7 @@
     "@github/time-elements": "3.1.2",
     "@honeybadger-io/webpack": "^1.2.0",
     "@rails/ujs": "6.1.4",
-    "@rails/webpacker": "5.4.2",
+    "@rails/webpacker": "5.4.3",
     "@reach/combobox": "^0.16.1",
     "ahoy.js": "^0.4.0",
     "autoprefixer": "^10.3.7",

yarn.lock

@@ -1666,10 +1666,10 @@
   resolved "https://registry.yarnpkg.com/@rails/ujs/-/ujs-6.1.4.tgz#093d5341595a02089ed309dec40f3c37da7b1b10"
   integrity sha512-O3lEzL5DYbxppMdsFSw36e4BHIlfz/xusynwXGv3l2lhSlvah41qviRpsoAlKXxl37nZAqK+UUF5cnGGK45Mfw==
 
-"@rails/webpacker@5.4.2":
-  version "5.4.2"
-  resolved "https://registry.yarnpkg.com/@rails/webpacker/-/webpacker-5.4.2.tgz#efc94f7ff396529411bb02a9da964e269ff2edb0"
-  integrity sha512-35qQWK2HCHGx2TT0UH0vuo5PyXQaahB2KJeGWOVl0jDPfwbvC4yvTq3+0/lhD5uOJx2eraGLRaIN4umwFCsksw==
+"@rails/webpacker@5.4.3":
+  version "5.4.3"
+  resolved "https://registry.yarnpkg.com/@rails/webpacker/-/webpacker-5.4.3.tgz#cfe2d8faffe7db5001bad50a1534408b4f2efb2f"
+  integrity sha512-tEM8tpUtfx6FxKwcuQ9+v6pzgqM5LeAdhT6IJ4Te3BPKFO1xrGrXugqeRuZ+gE8ASDZRTOK6yuQkapOpuX5JdA==
   dependencies:
     "@babel/core" "^7.15.0"
     "@babel/plugin-proposal-class-properties" "^7.14.5"