chore(deps): update dependency paper_trail to v15

Gemfile

@@ -16,7 +16,7 @@ gem 'uglifier'
 gem 'figaro', '~> 1.2'
 
 # model related
-gem 'paper_trail', '~> 14.0'
+gem 'paper_trail', '~> 15.0'
 gem 'pg', '1.5.9'
 # 1.8 is for Rails < 5.0
 gem 'ransack', '~> 4.0.0'

Gemfile.lock

@@ -371,8 +371,8 @@ GEM
       validate_url
       webfinger (~> 1.2)
     orm_adapter (0.5.0)
-    paper_trail (14.0.0)
-      activerecord (>= 6.0)
+    paper_trail (15.2.0)
+      activerecord (>= 6.1)
       request_store (~> 1.4)
     pdfkit (0.8.7.2)
     pg (1.5.9)
@@ -387,7 +387,7 @@ GEM
     puma (5.6.9)
       nio4r (~> 2.0)
     racc (1.8.1)
-    rack (2.2.9)
+    rack (2.2.10)
     rack-oauth2 (1.21.3)
       activesupport
       attr_required
@@ -436,7 +436,7 @@ GEM
     redis-client (0.14.1)
       connection_pool
     regexp_parser (2.9.2)
-    request_store (1.5.1)
+    request_store (1.7.0)
       rack (>= 1.4)
     responders (3.0.1)
       actionpack (>= 5.0)
@@ -548,7 +548,7 @@ GEM
     wkhtmltopdf-binary (0.12.6.6)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    zeitwerk (2.6.18)
+    zeitwerk (2.7.1)
 
 PLATFORMS
   ruby
@@ -596,7 +596,7 @@ DEPENDENCIES
   nokogiri (~> 1.16.0)
   omniauth-rails_csrf_protection
   omniauth-tara!
-  paper_trail (~> 14.0)
+  paper_trail (~> 15.0)
   pdfkit
   pg (= 1.5.9)
   pg_query (>= 0.9.0)