deps(docker,pip): bump awscli in /docker/postgres-kanister-tools

Bumps [awscli](https://github.com/aws/aws-cli) from 1.34.6 to 1.34.15.
- [Release notes](https://github.com/aws/aws-cli/releases)
- [Commits](aws/aws-cli@1.34.6...1.34.15)

---
updated-dependencies:
- dependency-name: awscli
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

docker/postgres-kanister-tools/requirements.txt

@@ -1,4 +1,4 @@
-awscli==1.34.6
+awscli==1.34.15
 pip==24.2
 setuptools==73.0.1
 wheel==0.44.0