Merge pull request #3598 from AlchemyCMS/slim-package

fix(gemspec): Ignore build artifacts from package

Author: tvdeyen

alchemy_cms.gemspec

@@ -16,7 +16,12 @@ Gem::Specification.new do |gem|
   gem.requirements << "ImageMagick (libmagick), v6.6 or greater."
   gem.required_ruby_version = ">= 3.1.0"
   gem.license = "BSD-3-Clause"
-  gem.files = Dir["{app,config,db,lib,vendor}/**/*", "LICENSE", "README.md"]
+  gem.files = Dir[
+    "{app,config,db,lib}/**/*",
+    "vendor/{assets,javascript}/**/*",
+    "LICENSE",
+    "README.md"
+  ]
   gem.require_paths = ["lib"]
 
   gem.metadata["homepage_uri"] = gem.homepage