Bump rmagick from 4.3.0 to 5.3.0

Bumps [rmagick](https://github.com/rmagick/rmagick) from 4.3.0 to 5.3.0.
- [Changelog](https://github.com/rmagick/rmagick/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rmagick/rmagick/commits)

---
updated-dependencies:
- dependency-name: rmagick
  dependency-type: direct:development
...

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

Gemfile

@@ -15,5 +15,5 @@ gem 'fastlane-plugin-wpmreleasetoolkit', '~> 9.2'
 
 ### Gems needed only for generating Promo Screenshots
 group :screenshots, optional: true do
-    gem 'rmagick', '~> 4.1'
+    gem 'rmagick', '~> 5.3'
 end

Gemfile.lock

@@ -275,6 +275,7 @@ GEM
     parser (3.2.2.4)
       ast (~> 2.4.1)
       racc
+    pkg-config (1.5.5)
     plist (3.7.0)
     progress_bar (1.3.3)
       highline (>= 1.6, < 3)
@@ -293,7 +294,8 @@ GEM
       uber (< 0.2.0)
     retriable (3.1.2)
     rexml (3.2.6)
-    rmagick (4.3.0)
+    rmagick (5.3.0)
+      pkg-config (~> 1.4)
     rouge (2.0.7)
     rubocop (1.57.2)
       json (~> 2.3)
@@ -362,7 +364,7 @@ DEPENDENCIES
   fastlane (~> 2)
   fastlane-plugin-wpmreleasetoolkit (~> 9.2)
   nokogiri
-  rmagick (~> 4.1)
+  rmagick (~> 5.3)
 
 BUNDLED WITH
    2.4.21