Merge branch 'eread/make-deprecation-docs-handling-compatible-with-ruby-3_1' into 'master'

Make deprecation docs handling compatible with Ruby 3.1

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/121352



Merged-by: Stan Hu <stanhu@gmail.com>
Approved-by: Stan Hu <stanhu@gmail.com>
Co-authored-by: Evan Read <eread@gitlab.com>

spec/tooling/docs/deprecation_handling_spec.rb

@@ -14,7 +14,7 @@
       ['14-10-c.yml', '14-2-b.yml', '14-2-a.yml']
     )
     # Create dummy YAML data based on file name
-    allow(YAML).to receive(:load_file) do |file_name|
+    allow(YAML).to receive(:safe_load_file) do |file_name|
       {
         'title' => file_name[/[a-z]*\.yml/],
         'removal_milestone' => file_name[/\d+-\d+/].tr('-', '.')

tooling/docs/deprecation_handling.rb

@@ -17,7 +17,7 @@ def render
       end
 
       entries = source_file_paths.flat_map do |file|
-        YAML.load_file(file)
+        YAML.safe_load_file(file, permitted_classes: [Date])
       end
       entries = entries.sort_by { |d| d["title"] }