Update docker to 5.0.3

[pyup-bot]

This PR updates docker from 4.1.0 to 5.0.3.

Changelog

5.0.2

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/75?closed=1)

Bugfixes
- Fix `disable_buffering` regression

5.0.1

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/74?closed=1)

Bugfixes
- Bring back support for ssh identity file
- Cleanup remaining python-2 dependencies
- Fix image save example in docs

Miscellaneous
- Bump urllib3 to 1.26.5
- Bump requests to 2.26.0

5.0.0

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/70?closed=1)

Breaking changes
- Remove support for Python 2.7
- Make Python 3.6 the minimum version supported

Features
- Add `limit` parameter to image search endpoint

Bugfixes
- Fix `KeyError` exception on secret create
- Verify TLS keys loaded from docker contexts
- Update PORT_SPEC regex to allow square brackets for IPv6 addresses
- Fix containers and images documentation examples

4.4.4

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/73?closed=1)

Bugfixes
- Remove `LD_LIBRARY_PATH` and `SSL_CERT_FILE` environment variables when shelling out to the ssh client

4.4.3

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/72?closed=1)

Features
- Add support for docker.types.Placement.MaxReplicas

Bugfixes
- Fix SSH port parsing when shelling out to the ssh client

4.4.2

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/71?closed=1)

Bugfixes
- Fix SSH connection bug where the hostname was incorrectly trimmed and the error was hidden
- Fix docs example

Miscellaneous
- Add Python3.8 and 3.9 in setup.py classifier list

4.4.1

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/69?closed=1)

Bugfixes
- Avoid setting unsuported parameter for subprocess.Popen on Windows
- Replace use of deprecated "filter" argument on ""docker/api/image"

4.4.0

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/67?closed=1)

Features
- Add an alternative SSH connection to the paramiko one, based on shelling out to the SSh client. Similar to the behaviour of Docker cli
- Default image tag to `latest` on `pull`

Bugfixes
- Fix plugin model upgrade
- Fix examples URL in ulimits

Miscellaneous
- Improve exception messages for server and client errors
- Bump cryptography from 2.3 to 3.2

4.3.1

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/68?closed=1)

Miscellaneous
- Set default API version to `auto`
- Fix conversion to bytes for `float`
- Support OpenSSH `identityfile` option

4.3.0

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/64?closed=1)

Features
- Add `DeviceRequest` type to expose host resources such as GPUs
- Add support for `DriverOpts` in EndpointConfig
- Disable compression by default when using container.get_archive method

Miscellaneous
- Update default API version to v1.39
- Update test engine version to 19.03.12

4.2.2

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/66?closed=1)

Bugfixes

- Fix context load for non-docker endpoints

4.2.1

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/65?closed=1)

Features

- Add option on when to use `tls` on Context constructor
- Make context orchestrator field optional

4.2.0

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[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/63?closed=1)

Bugfixes

- Fix `win32pipe.WaitNamedPipe` throw exception in Windows containers
- Use `Hostname`, `Username`, `Port` and `ProxyCommand` settings from `.ssh/config` when on SSH
- Set host key policy for ssh transport to `paramiko.WarningPolicy()`
- Set logging level of `paramiko` to warn

Features

- Add support for docker contexts through `docker.ContextAPI`

Links

• PyPI: https://pypi.org/project/docker
• Changelog: https://pyup.io/changelogs/docker/
• Repo: https://github.com/docker/docker-py

[codecov-commenter]

Codecov Report

Merging #484 (99705ac) into master (247e7b4) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #484   +/-   ##
======================================
  Coverage    56.7%   56.7%           
======================================
  Files         143     143           
  Lines       10641   10641           
======================================
  Hits         6039    6039           
  Misses       4602    4602           

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