Make the release script update Gemfile.lock

Author: alexeyr

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    react_on_rails (14.2.0)
+    react_on_rails (15.0.0.alpha.2)
       addressable
       connection_pool
       execjs (~> 2.5)

rakelib/release.rake

@@ -75,19 +75,21 @@ task :release, %i[gem_version dry_run tools_install] do |_t, args|
   sh_in_dir(gem_root, "gem release") unless is_dry_run
 
   msg = <<~MSG
-    Once you have successfully published, run these commands to update the spec apps:
+    Once you have successfully published, run these commands to update Gemfile.lock locally and in the spec apps:
 
+    bundle install
     cd #{dummy_app_dir}; bundle update react_on_rails
-    cd #{gem_root}#{' '}
-    git commit -a -m 'Update Gemfile.lock for spec app'
+    cd #{gem_root}
+    git commit -a -m 'Update Gemfile.lock'
     git push
   MSG
   puts msg
 end
 # rubocop:enable Metrics/BlockLength
 
 task :test do
+  bundle_install_in(gem_root)
   unbundled_sh_in_dir(gem_root, "cd #{dummy_app_dir}; bundle update react_on_rails")
-  sh_in_dir(gem_root, "git commit -a -m 'Update Gemfile.lock for spec app'")
+  sh_in_dir(gem_root, "git commit -a -m 'Update Gemfile.lock'")
   sh_in_dir(gem_root, "git push")
 end