Fix release task to commit version bump before gem release

The gem bump command modifies the version file but the --no-commit
flag means it doesn't commit it. This causes gem release to fail
because it expects a clean working directory.

This commit adds git commands to stage and commit the version file
after bumping but before releasing the gem.

Author: justin808

rakelib/release.rake

@@ -42,6 +42,10 @@ task :release, %i[gem_version dry_run] do |_t, args|
   sh_in_dir(gem_root, "git pull --rebase")
   sh_in_dir(gem_root, "gem bump --no-commit --file lib/cypress_on_rails/version.rb #{gem_version.strip.empty? ? '' : %(-v #{gem_version})}")
 
+  # Commit the version bump
+  sh_in_dir(gem_root, "git add lib/cypress_on_rails/version.rb")
+  sh_in_dir(gem_root, "git commit -m 'Bump version to #{gem_version}'")
+
   # Release the new gem version
   puts "Carefully add your OTP for Rubygems. If you get an error, run 'gem release' again."
   sh_in_dir(gem_root, "gem release") unless is_dry_run