[deps] Update boto3 requirement in /images

Updates the requirements on [boto3](https://github.com/boto/boto3) to permit the latest version.
- [Release notes](https://github.com/boto/boto3/releases)
- [Commits](boto/boto3@1.40.49...1.42.5)

---
updated-dependencies:
- dependency-name: boto3
  dependency-version: 1.42.5
  dependency-type: direct:production
...

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

Author: dependabot[bot]

images/openwisp_base/requirements.txt

@@ -12,4 +12,4 @@ tldextract>=5.3.0,<5.4.0
 # these add support for object storage
 # (eg: Amazon S3, GCS)
 django-storages>=1.14.6,<1.15.0
-boto3>=1.40.49,<1.41.0
+boto3>=1.40.49,<1.43.0