Compatibility for async_timeout 4.0.0

[frenck]

Ensures it works with async_timeout 4, which is now part of Home Assistant.

Noticed this one when working on Python 3.10 and a newer pip version:

ERROR: Cannot install -r requirements_test_all.txt (line 118), -r requirements_test_all.txt (line 24) and -r requirements_test_all.txt (line 54) because these package versions have conflicting dependencies.

The conflict is caused by:
    pyrmvtransport 0.3.2 depends on async-timeout
    adax 0.1.1 depends on async-timeout>=1.4.0
    aioguardian 1.0.8 depends on async_timeout<4.0.0 and >=3.0.1
    The user requested (constraint) async-timeout==4.0.0

[sourcery-ai[bot]]

Sourcery Code Quality Report

Merging this PR leaves code quality unchanged.

Quality metrics	Before	After	Change
Complexity	1.33 ⭐	1.33 ⭐	0.00
Method Length	44.29 ⭐	44.29 ⭐	0.00
Working memory	5.10 ⭐	5.10 ⭐	0.00
Quality	85.59% ⭐	85.59% ⭐	0.00%

Other metrics	Before	After	Change
Lines	220	220	0

Changed files	Quality Before	Quality After	Quality Change
RMVtransport/rmvtransport.py	85.59% ⭐	85.59% ⭐	0.00%

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation

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[codecov[bot]]

Codecov Report

Merging #47 (3d24a9d) into development (6724ea6) will not change coverage. The diff coverage is 100.00%.

@@              Coverage Diff              @@
##           development       #47   +/-   ##
=============================================
  Coverage       100.00%   100.00%           
=============================================
  Files                6         6           
  Lines              266       266           
=============================================
  Hits               266       266           

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
RMVtransport/rmvtransport.py	100.00% <100.00%> (ø)

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Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 6724ea6...3d24a9d. Read the comment docs.