Bump appraisal gem (#1574)

I tried to run specs on my local, but it didn't work.
It seems that `appraisal` v2.4 has a problem with the latest bundler.
So I would like to update to the V2.5.

Ref: thoughtbot/appraisal#210 (comment)

Gemfile

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'appraisal', '2.4.0'
+gem 'appraisal', '2.5.0'
 gem 'bundler', '~> 2.0'
 gem 'pry'
 gem 'pry-byebug'

Gemfile.lock

@@ -6,7 +6,7 @@ GEM
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
-    appraisal (2.4.0)
+    appraisal (2.5.0)
       bundler
       rake
       thor (>= 0.14.0)
@@ -82,7 +82,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  appraisal (= 2.4.0)
+  appraisal (= 2.5.0)
   bundler (~> 2.0)
   fssm
   pry

gemfiles/rails_6_1.gemfile

@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "appraisal", "2.4.0"
+gem "appraisal", "2.5.0"
 gem "bundler", "~> 2.0"
 gem "pry"
 gem "pry-byebug"

gemfiles/rails_6_1.gemfile.lock

@@ -62,7 +62,7 @@ GEM
       zeitwerk (~> 2.3)
     addressable (2.8.1)
       public_suffix (>= 2.0.2, < 6.0)
-    appraisal (2.4.0)
+    appraisal (2.5.0)
       bundler
       rake
       thor (>= 0.14.0)
@@ -286,7 +286,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  appraisal (= 2.4.0)
+  appraisal (= 2.5.0)
   bcrypt (~> 3.1.7)
   bootsnap (>= 1.4.4)
   bundler (~> 2.0)

gemfiles/rails_7_0.gemfile

@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "appraisal", "2.4.0"
+gem "appraisal", "2.5.0"
 gem "bundler", "~> 2.0"
 gem "pry"
 gem "pry-byebug"

gemfiles/rails_7_0.gemfile.lock

@@ -68,7 +68,7 @@ GEM
       tzinfo (~> 2.0)
     addressable (2.8.1)
       public_suffix (>= 2.0.2, < 6.0)
-    appraisal (2.4.0)
+    appraisal (2.5.0)
       bundler
       rake
       thor (>= 0.14.0)
@@ -282,7 +282,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  appraisal (= 2.4.0)
+  appraisal (= 2.5.0)
   bcrypt (~> 3.1.7)
   bootsnap
   bundler (~> 2.0)