[Fix rubocop#10200] Fix an error when inspecting a directory named *

Fixes rubocop#10200.

This PR fixes an error when inspecting a directory named `*`.

changelog/fix_error_when_inspecting_dir_named_wildcard.md

@@ -0,0 +1 @@
+* [#10200](https://github.com/rubocop/rubocop/issues/10200): Fix an error when inspecting a directory named `*`. ([@koic][])

lib/rubocop/target_finder.rb

@@ -95,7 +95,7 @@ def find_files(base_dir, flags)
 
     def wanted_dir_patterns(base_dir, exclude_pattern, flags)
       base_dir = base_dir.gsub('/{}/', '/\{}/')
-      dirs = Dir.glob(File.join(base_dir.gsub('/**/', '/\**/'), '*/'), flags)
+      dirs = Dir.glob(File.join(base_dir.gsub('/*/', '/\*/').gsub('/**/', '/\**/'), '*/'), flags)
                 .reject do |dir|
                   next true if dir.end_with?('/./', '/../')
                   next true if File.fnmatch?(exclude_pattern, dir, flags)

spec/rubocop/cli_spec.rb

@@ -258,6 +258,20 @@ def and_with_args
         end
       end
     end
+
+    context 'when a directory is named `*`' do
+      before do
+        FileUtils.mkdir('*')
+      end
+
+      after do
+        FileUtils.rmdir('*')
+      end
+
+      it 'does not crash' do
+        expect(cli.run([])).to eq(0)
+      end
+    end
   end
 
   describe 'rubocop:disable comment' do