build(deps): add runtime dependency 'rake'

This is a holdover until google-protobuf merges protocolbuffers/protobuf#15203

Gemfile

@@ -1,5 +1,16 @@
 source "https://rubygems.org"
 ruby File.read(".ruby-version").strip
+
+=begin 
+`find_spec_for_exe': can't find gem rake (>= 0.a) with executable rake
+(Gem::GemNotFoundException)
+from /opt/hostedtoolcache/Ruby/3.3.0/x64/lib/ruby/3.3.0/rubygems.rb:278:in
+`activate_bin_path'
+	from /opt/hostedtoolcache/Ruby/3.3.0/x64/bin/rake:25:in `<main>'
+=end
+# See https://github.com/protocolbuffers/protobuf/pull/15203
+gem "rake", "~> 13.1.0"
+
 # Hello! This is where you manage which Jekyll version is used to run.
 # When you want to use a different version, change it below, save the
 # file and run `bundle install`. Run Jekyll with `bundle exec`, like so:

Gemfile.lock

@@ -60,6 +60,7 @@ GEM
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (5.0.4)
+    rake (13.1.0)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -90,6 +91,7 @@ DEPENDENCIES
   jekyll-feed (~> 0.17.0)
   kramdown-parser-gfm
   minima!
+  rake (~> 13.1.0)
   tzinfo (>= 1, < 3)
   tzinfo-data
   wdm (~> 0.1.1)