Updated the getattr patch

[jesper-friis]

Description

Ensure that we can access annotations added by imported ontologies.

This issue was revealed when running the periodictable script for EMMO 1.0.0-beta5.

Type of change

• Bug fix.
• New feature.
• Documentation update.
• Test update.

Checklist

This checklist can be used as a help for the reviewer.

• Is the code easy to read and understand?
• Are comments for humans to read, not computers to disregard?
• Does a new feature has an accompanying new test (in the CI or unit testing schemes)?
• Has the documentation been updated as necessary?
• Does this close the issue?
• Is the change limited to the issue?
• Are errors handled for all outcomes?
• Does the new feature provide new restrictions on dependencies, and if so is this documented?

Comments

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (7a2d993) 71.36% compared to head (1ea0f87) 71.33%.

Files	Patch %	Lines
ontopy/patch.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #699      +/-   ##
==========================================
- Coverage   71.36%   71.33%   -0.04%     
==========================================
  Files          16       16              
  Lines        3391     3394       +3     
==========================================
+ Hits         2420     2421       +1     
- Misses        971      973       +2     

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