Upgraded python-amcrest to 1.2.3

[tchellomello]

Description:

Upgraded python-amcrest to 1.2.3

Example entry for configuration.yaml (if applicable):

amcrest:
  - host: 192.168.0.1
    username: foo
    password: bar
    sensors:
      - motion_detector
      - sdcard

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in home-assistant.github.io

If the code communicates with devices, web services, or third-party tools:

• New dependencies have been added to the REQUIREMENTS variable ([example][ex-requir]).
• New dependencies are only imported inside functions that use them ([example][ex-import]).
• New or updated dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

If the code does not interact with devices:

• Tests have been added to verify that the new code works.