Bump boto3

Bumps the python-manual-sample-app-deps group in /sample-apps/python-manual-instrumentation-sample-app with 1 update: [boto3](https://github.com/boto/boto3).


Updates `boto3` from 1.35.64 to 1.35.69
- [Release notes](https://github.com/boto/boto3/releases)
- [Commits](boto/boto3@1.35.64...1.35.69)

---
updated-dependencies:
- dependency-name: boto3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-manual-sample-app-deps
...

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

sample-apps/python-manual-instrumentation-sample-app/requirements.txt

@@ -1,4 +1,4 @@
-boto3==1.35.64
+boto3==1.35.69
 Flask==2.3.3
 opentelemetry-distro==0.49b2
 opentelemetry-exporter-otlp==1.28.2