Bump aws-sdk-dynamodb from 1.102.0 to 1.103.0 (#465)

Bumps [aws-sdk-dynamodb](https://github.com/aws/aws-sdk-ruby) from 1.102.0 to 1.103.0.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/version-3/gems/aws-sdk-dynamodb/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-ruby/commits)

---
updated-dependencies:
- dependency-name: aws-sdk-dynamodb
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -79,15 +79,17 @@ GEM
       public_suffix (>= 2.0.2, < 6.0)
     ast (2.4.2)
     aws-eventstream (1.3.0)
-    aws-partitions (1.887.0)
-    aws-sdk-core (3.191.0)
+    aws-partitions (1.893.0)
+    aws-sdk-core (3.191.2)
       aws-eventstream (~> 1, >= 1.3.0)
       aws-partitions (~> 1, >= 1.651.0)
       aws-sigv4 (~> 1.8)
+      base64
       jmespath (~> 1, >= 1.6.1)
-    aws-sdk-dynamodb (1.102.0)
+    aws-sdk-dynamodb (1.103.0)
       aws-sdk-core (~> 3, >= 3.191.0)
       aws-sigv4 (~> 1.1)
+      bigdecimal
     aws-sdk-sqs (1.70.0)
       aws-sdk-core (~> 3, >= 3.191.0)
       aws-sigv4 (~> 1.1)