Added support for dereferenced map properties

[m1r4c]

Fixes #2591

[ChristopherHX]

Thank you for implementing this 👍

I may cherry pick this into my new upstream, on actions-oss to release this earlier

[m1r4c]

Thank you for implementing this 👍

I may cherry pick this into my new upstream, on actions-oss to release this earlier

@ChristopherHX thank you for this awesome tool! I've applied your suggestions so feel free to merge at any time :)

[mergify]

@m1r4c this pull request has failed checks 🛠

[codecov]

Codecov Report

Attention: Patch coverage is 70.83333% with 7 lines in your changes missing coverage. Please review.

Project coverage is 68.72%. Comparing base (5a80a04) to head (518c7f3).
Report is 155 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/exprparser/interpreter.go	70.83%	6 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2635      +/-   ##
==========================================
+ Coverage   61.56%   68.72%   +7.16%     
==========================================
  Files          53       71      +18     
  Lines        9002    10942    +1940     
==========================================
+ Hits         5542     7520    +1978     
+ Misses       3020     2857     -163     
- Partials      440      565     +125     

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