build(deps): bump boto3 from 1.16.40 to 1.16.43

Bumps [boto3](https://github.com/boto/boto3) from 1.16.40 to 1.16.43.
- [Release notes](https://github.com/boto/boto3/releases)
- [Changelog](https://github.com/boto/boto3/blob/develop/CHANGELOG.rst)
- [Commits](boto/boto3@1.16.40...1.16.43)

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

requirements.txt

@@ -5,7 +5,7 @@
 #    pip-compile --allow-unsafe
 #
 argcomplete==1.12.2       # via drode (setup.py)
-boto3==1.16.40            # via drode (setup.py)
+boto3==1.16.43            # via drode (setup.py)
 botocore==1.19.40         # via boto3, s3transfer
 certifi==2020.12.5        # via requests
 chardet==3.0.4            # via requests