Bump aws/aws-sdk-php from 3.269.7 to 3.288.1 in /php/example_code/glue

Bumps [aws/aws-sdk-php](https://github.com/aws/aws-sdk-php) from 3.269.7 to 3.288.1.
- [Release notes](https://github.com/aws/aws-sdk-php/releases)
- [Commits](aws/aws-sdk-php@3.269.7...3.288.1)

---
updated-dependencies:
- dependency-name: aws/aws-sdk-php
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>