Update aws-sdk requirement from ~> 3.2.0 to ~> 3.3.0

---
updated-dependencies:
- dependency-name: aws-sdk
  dependency-version: 3.3.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

Gemfile

@@ -15,7 +15,7 @@ gemspec
 
 # Confine EC2 engine dependencies
 group "ec2-engine" do
-  gem "aws-sdk", "~> 3.2.0", require: false
+  gem "aws-sdk", "~> 3.3.0", require: false
 end
 
 # "lock_manager" is specified in development dependencies, to allow