feat(deps): Bump the runtime-dependencies group with 2 updates

Bumps the runtime-dependencies group with 2 updates: [boto3](https://github.com/boto/boto3) and [boto3-stubs](https://github.com/youtype/mypy_boto3_builder).


Updates `boto3` from 1.35.76 to 1.35.81
- [Release notes](https://github.com/boto/boto3/releases)
- [Commits](boto/boto3@1.35.76...1.35.81)

Updates `boto3-stubs` from 1.35.76 to 1.35.81
- [Release notes](https://github.com/youtype/mypy_boto3_builder/releases)
- [Commits](https://github.com/youtype/mypy_boto3_builder/commits)

---
updated-dependencies:
- dependency-name: boto3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: runtime-dependencies
- dependency-name: boto3-stubs
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: runtime-dependencies
...

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