Upgrade: [dependabot] - bump boto3 from 1.40.34 to 1.40.39

Bumps [boto3](https://github.com/boto/boto3) from 1.40.34 to 1.40.39.
- [Release notes](https://github.com/boto/boto3/releases)
- [Commits](boto/boto3@1.40.34...1.40.39)

---
updated-dependencies:
- dependency-name: boto3
  dependency-version: 1.40.39
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

poetry.lock

@@ -35,7 +35,7 @@ moto = {extras = ["ssm"], version = "^5.1.12"}
 [tool.poetry.group.slackBotFunction.dependencies]
 slack-bolt = "^1.25.0"
 slack-sdk = "^3.36.0"
-boto3 = "^1.40.34"
+boto3 = "^1.40.39"
 requests = "^2.32.5"
 opensearch-py = "^3.0.0"
 urllib3 = "^2.5.0"
@@ -44,7 +44,7 @@ boto3-stubs = {extras = ["bedrock-agent", "bedrock-agent-runtime", "bedrock-runt
 
 
 [tool.poetry.group.syncKnowledgeBaseFunction.dependencies]
-boto3 = "^1.40.34"
+boto3 = "^1.40.39"
 aws-lambda-powertools = "^3.20.0"
 
 [tool.black]