[deploy] Bump webpacker from 5.1.1 to 5.2.1 (#9945)

* Bump webpacker from 5.1.1 to 5.2.1

Bumps [webpacker](https://github.com/rails/webpacker) from 5.1.1 to 5.2.1.
- [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/v5.1.1...v5.2.1)

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

* Bump webpacker from 5.1.1 to 5.2.1 (Update vendor/cache)

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Gemfile

@@ -108,7 +108,7 @@ gem "uglifier", "~> 4.2" # Uglifier minifies JavaScript files
 gem "ulid", "~> 1.2" # Universally Unique Lexicographically Sortable Identifier implementation for Ruby
 gem "validate_url", "~> 1.0" # Library for validating urls in Rails
 gem "vault", "~> 0.15" # Used to store secrets
-gem "webpacker", "~> 5.1.1" # Use webpack to manage app-like JavaScript modules in Rails
+gem "webpacker", "~> 5.2.1" # Use webpack to manage app-like JavaScript modules in Rails
 
 group :development do
   gem "better_errors", "~> 2.7" # Provides a better error page for Rails and other Rack apps

Gemfile.lock

@@ -837,7 +837,7 @@ GEM
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
-    webpacker (5.1.1)
+    webpacker (5.2.1)
       activesupport (>= 5.2)
       rack-proxy (>= 0.6.1)
       railties (>= 5.2)
@@ -1007,7 +1007,7 @@ DEPENDENCIES
   web-console (~> 4.0)
   webdrivers (~> 4.4)
   webmock (~> 3.8)
-  webpacker (~> 5.1.1)
+  webpacker (~> 5.2.1)
   yard (~> 0.9.25)
   yard-activerecord (~> 0.0.16)
   yard-activesupport-concern (~> 0.0.1)