poetry: bump boto3 from 1.34.67 to 1.34.84

Bumps [boto3](https://github.com/boto/boto3) from 1.34.67 to 1.34.84.
- [Release notes](https://github.com/boto/boto3/releases)
- [Changelog](https://github.com/boto/boto3/blob/develop/CHANGELOG.rst)
- [Commits](boto/boto3@1.34.67...1.34.84)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

poetry.lock

@@ -20,7 +20,7 @@ nrlf-converter = {url = "https://github.com/NHSDigital/nrlf-converter/releases/d
 pytest = "^8.1.1"
 pytest-mock = "^3.12.0"
 pytest-cov = "^5.0.0"
-boto3 = "^1.34.60"
+boto3 = "^1.34.84"
 sh = "^2.0.6"
 moto = {extras = ["dynamodb", "s3"], version = "^5.0.5"}
 behave = "^1.2.6"