Bump version of DynamoDB we use for examples.
Bump version of DynamoDB we use for examples.

DualSpark/rusoto,mattico/rusoto,mattico/rusoto,DualSpark/rust-aws,SecurityInsanity/rusoto,DualSpark/rusoto,DualSpark/rust-aws,DualSpark/rusoto,DualSpark/rust-aws,rusoto/rusoto,mattico/rusoto,rusoto/rusoto,rusoto/rusoto,SecurityInsanity/rusoto