Chaostoolkit-aws

Fixed

* Export actions in awslambda

Added

* `chaosaws.awslambda.actions.add_layer` and `remove_layer` to manage a
function's layers
* `chaosaws.awslambda.actions.add_latency` and `remove_latency` to introduce
latency into a function
* `chaosaws.awslambda.actions.add_error` and `remove_error` to introduce
error into a function (pending https://github.com/aws-cli-tools/chaos-lambda-extension/issues/14)

Added

* MSK probes `chaosaws.msk.probes.describe_msk_cluster` `chaosaws.msk.probes.get_bootstrap_servers`
* MSK actions `chaosaws.msk.actions.reboot_msk_broker` `chaosaws.msk.actions.delete_cluster`

 Changed

* Bump dependencies

Added

* The `set_tags_on_instances` and `remove_tags_from_instances` actions on the
EC2 package

Fixed

- Use `boto3.lambda.get_function_concurrency` to retrieve the reserved
`ReservedConcurrentExecutions` from a lambda function

Changed

- Use existing AWS FIS policies `AWSFaultInjectionSimulatorNetworkAccess`,
`AWSFaultInjectionSimulatorEC2Access` instead of creating new ones
- Drop `logzero`
- Fixed EMR test to use the appropriate `moto`
- Switched tp [pdm](https://pdm-project.org/latest/) away from `setuptools` to
manage the package. This will offer a more cohesive experience and will
handle dependencies more strictly
- Drop Python 3.7 support as it has been EOL since June 2023
- Updated GH actions to use PDM and the trusted publisher workflow from Pypi

Added

- Code of Conduct