Update dependency docker to >=3.7.3,<3.8

[mend-5034428]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
docker (changelog)	>=3.7,<3.8 -> >=3.7.3,<3.8

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Release Notes

docker/docker-py (docker)

v3.7.3

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v3.7.2

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List of PRs / issues for this release

Bugfixes

• Fix base_url to keep TCP protocol on utils.py by letting the responsability of changing the
  protocol to parse_host afterwards, letting base_url with the original value.
• XFAIL test_attach_stream_and_cancel on TLS

v3.7.1

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List of PRs / issues for this release

Bugfixes

• Set a different default number (which is now 9) for SSH pools
• Adds a BaseHTTPAdapter with a close method to ensure that the
  pools is clean on close()
• Makes SSHHTTPAdapter reopen a closed connection when needed
  like the others

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