⬆️ Bump aws-types from v0.0.7-alpha to v0.15.0

Bumps [aws-types](https://github.com/awslabs/aws-sdk-rust) from v0.0.7-alpha to v0.15.0.
- [Release notes](https://github.com/awslabs/aws-sdk-rust/releases)
- [Changelog](https://github.com/awslabs/aws-sdk-rust/blob/5e652cce1d6f1c92bafd8e33388b6fdca55506ad/CHANGELOG.md)
- [Commits](awslabs/aws-sdk-rust@1b923f8...5e652cc)

---
updated-dependencies:
- dependency-name: aws-types
  dependency-type: direct:production
...

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

Cargo.toml

@@ -16,7 +16,7 @@ default = ["tts"]
 [dependencies]
 hyper = "1.3.1"
 polly = { git = "https://github.com/awslabs/aws-sdk-rust", tag = "v0.0.7-alpha", package = "aws-sdk-polly" }
-aws-types = { git = "https://github.com/awslabs/aws-sdk-rust", tag = "v0.0.7-alpha", package = "aws-types" }
+aws-types = { git = "https://github.com/awslabs/aws-sdk-rust", tag = "v0.15.0", package = "aws-types" }
 tracing-subscriber = { version = "0.3.18", features = ["fmt"] }
 tiger = "0.2.1"
 rand = "0.8.5"