Bump aws-sdk-importexport in /contrib/cloudformation-template

Bumps [aws-sdk-importexport](https://github.com/aws/aws-sdk-ruby) from 1.18.0 to 1.34.0.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/version-3/gems/aws-sdk-importexport/CHANGELOG.md)
- [Commits](aws/aws-sdk-ruby@1.18.0...v1.34.0)

---
updated-dependencies:
- dependency-name: aws-sdk-importexport
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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

contrib/cloudformation-template/Gemfile.lock

@@ -310,8 +310,8 @@ GEM
     aws-sdk-imagebuilder (1.38.0)
       aws-sdk-core (~> 3, >= 3.126.0)
       aws-sigv4 (~> 1.1)
-    aws-sdk-importexport (1.18.0)
-      aws-sdk-core (~> 3, >= 3.71.0)
+    aws-sdk-importexport (1.34.0)
+      aws-sdk-core (~> 3, >= 3.126.0)
       aws-sigv2 (~> 1.0)
     aws-sdk-inspector (1.25.0)
       aws-sdk-core (~> 3, >= 3.71.0)
@@ -904,7 +904,7 @@ GEM
     aws-sdk-xray (1.25.0)
       aws-sdk-core (~> 3, >= 3.71.0)
       aws-sigv4 (~> 1.1)
-    aws-sigv2 (1.0.1)
+    aws-sigv2 (1.1.0)
     aws-sigv4 (1.4.0)
       aws-eventstream (~> 1, >= 1.0.2)
     cloudformation-ruby-dsl (1.5.0)