Update rake requirement from ~> 10.0 to ~> 12.3

Updates the requirements on [rake](https://github.com/ruby/rake) to permit the latest version.
- [Release notes](https://github.com/ruby/rake/releases)
- [Changelog](https://github.com/ruby/rake/blob/master/History.rdoc)
- [Commits](ruby/rake@v10.5.0...v12.3.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

Gemfile.lock

@@ -7,7 +7,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.3)
-    rake (10.5.0)
+    rake (12.3.2)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
@@ -28,7 +28,7 @@ PLATFORMS
 DEPENDENCIES
   bundler (>= 1.14)
   learnosity-sdk!
-  rake (~> 10.0)
+  rake (~> 12.3)
   rspec (~> 3.0)
 
 BUNDLED WITH

learnosity-sdk.gemspec

@@ -31,7 +31,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_development_dependency "bundler", ">= 1.14"
-  spec.add_development_dependency "rake", "~> 10.0"
+  spec.add_development_dependency "rake", "~> 12.3"
   spec.add_development_dependency "rspec", "~> 3.0"
 end