Suppress Interrupt exception for LSP

This PR suppresses the following backtrace of `Interrupt` exception for LSP:

## Before

```console
$ bundle exec rubocop --lsp
^C/Users/koic/.rbenv/versions/3.4-dev/lib/ruby/gems/3.4.0+0/gems/language_server-protocol-3.17.0.3/
lib/language_server/protocol/transport/io/reader.rb:16:in 'IO#gets': Interrupt
from /Users/koic/.rbenv/versions/3.4-dev/lib/ruby/gems/3.4.0+0/gems/language_server-protocol-3.17.0.3/
lib/language_server/protocol/transport/io/reader.rb:16:in 'LanguageServer::Protocol::Transport::Io::Reader#read'
        from /Users/koic/src/github.com/rubocop/rubocop/lib/rubocop/lsp/server.rb:35:in 'RuboCop::LSP::Server#start'
(snip)
```

## After

```console
$ bundle exec rubocop --lsp
^C
Exiting...
```

lib/rubocop/cli.rb

@@ -57,6 +57,10 @@ def run(args = ARGV)
     rescue RuboCop::Error => e
       warn Rainbow("Error: #{e.message}").red
       STATUS_ERROR
+    rescue Interrupt
+      warn ''
+      warn 'Exiting...'
+      STATUS_INTERRUPTED
     rescue Finished
       STATUS_SUCCESS
     rescue OptionParser::InvalidOption => e