Enable even more frozen string in lib/**/*.rb

Enables frozen string for the following files:

* lib/generators/**/*.rb
* lib/gitaly/**/*.rb
* lib/google_api/**/*.rb
* lib/haml_lint/**/*.rb
* lib/json_web_token/**/*.rb
* lib/mattermost/**/*.rb
* lib/microsoft_teams/**/*.rb
* lib/object_storage/**/*.rb
* lib/omni_auth/**/*.rb
* lib/peek/**/*.rb
* lib/rouge/**/*.rb
* lib/rspec_flaky/**/*.rb
* lib/system_check/**/*.rb

Partially addresses #47424.

3 files changed, 8 insertions, 2 deletions

diff --git a/lib/peek/rblineprof/custom_controller_helpers.rb b/lib/peek/rblineprof/custom_controller_helpers.rb
index 9beb442bfa3..581cc6a37b4 100644
--- a/lib/peek/rblineprof/custom_controller_helpers.rb
+++ b/lib/peek/rblineprof/custom_controller_helpers.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Peek
   module Rblineprof
     module CustomControllerHelpers
@@ -41,7 +43,7 @@ module Peek
             ]
           end.sort_by{ |a,b,c,d,e,f| -f }
 
-          output = "<div class='modal-dialog modal-xl'><div class='modal-content'>"
+          output = ["<div class='modal-dialog modal-xl'><div class='modal-content'>"]
           output << "<div class='modal-header'>"
           output << "<h4>Line profiling: #{human_description(params[:lineprofiler])}</h4>"
           output << "<button class='close' type='button' data-dismiss='modal' aria-label='close'><span aria-hidden='true'>&times;</span></button>"
@@ -93,7 +95,7 @@ module Peek
 
           output << "</div></div></div>"
 
-          response.body += "<div class='modal' id='modal-peek-line-profile' tabindex=-1>#{output}</div>".html_safe
+          response.body += "<div class='modal' id='modal-peek-line-profile' tabindex=-1>#{output.join}</div>".html_safe
         end
 
         ret
diff --git a/lib/peek/views/gitaly.rb b/lib/peek/views/gitaly.rb
index ab35f7a2258..860963ef94f 100644
--- a/lib/peek/views/gitaly.rb
+++ b/lib/peek/views/gitaly.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Peek
   module Views
     class Gitaly < View
diff --git a/lib/peek/views/host.rb b/lib/peek/views/host.rb
index 43c8a35c7ea..da0816b364c 100644
--- a/lib/peek/views/host.rb
+++ b/lib/peek/views/host.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Peek
   module Views
     class Host < View