Don't exit from failed secrets commands

We can let the exception bubble up. We'll still get an error message and
it ensures that any cleanup we need is done (i.e. releasing deploy locks).

lib/kamal/cli/secrets.rb

@@ -5,43 +5,32 @@ class Kamal::Cli::Secrets < Kamal::Cli::Base
   option :from, type: :string, required: false, desc: "A vault or folder to fetch the secrets from"
   option :inline, type: :boolean, required: false, hidden: true
   def fetch(*secrets)
-    handle_output(inline: options[:inline]) do
-      results = adapter(options[:adapter]).fetch(secrets, **options.slice(:account, :from).symbolize_keys)
-      JSON.dump(results).shellescape
-    end
+    results = adapter(options[:adapter]).fetch(secrets, **options.slice(:account, :from).symbolize_keys)
+
+    return_or_puts JSON.dump(results).shellescape, inline: options[:inline]
   end
 
   desc "extract", "Extract a single secret from the results of a fetch call"
   option :inline, type: :boolean, required: false, hidden: true
   def extract(name, secrets)
-    handle_output(inline: options[:inline]) do
-      parsed_secrets = JSON.parse(secrets)
+    parsed_secrets = JSON.parse(secrets)
+    value = parsed_secrets[name] || parsed_secrets.find { |k, v| k.end_with?("/#{name}") }&.last
 
-      value = parsed_secrets[name] || parsed_secrets.find { |k, v| k.end_with?("/#{name}") }&.last
+    raise "Could not find secret #{name}" if value.nil?
 
-      raise "Could not find secret #{name}" if value.nil?
-
-      value
-    end
+    return_or_puts value, inline: options[:inline]
   end
 
   private
     def adapter(adapter)
       Kamal::Secrets::Adapters.lookup(adapter)
     end
 
-    def handle_output(inline: nil)
-      yield.tap do |output|
-        puts output unless inline
+    def return_or_puts(value, inline: nil)
+      if inline
+        value
+      else
+        puts value
       end
-    rescue => e
-      handle_error(e)
-    end
-
-    def handle_error(e)
-      $stderr.puts "  \e[31mERROR (#{e.class}): #{e.message}\e[0m"
-      $stderr.puts e.backtrace if ENV["VERBOSE"]
-
-      exit 1
     end
 end