fix: Add a check to prevent attempting to load a directory within patterns

[LaurenceJJones]

Fix: #3325

[github-actions]

@LaurenceJJones: There are no 'kind' label on this PR. You need a 'kind' label to generate the release automatically.

• /kind feature
• /kind enhancement
• /kind refactoring
• /kind fix
• /kind chore
• /kind dependencies

Details

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[github-actions]

@LaurenceJJones: There are no area labels on this PR. You can add as many areas as you see fit.

• /area agent
• /area local-api
• /area cscli
• /area appsec
• /area security
• /area configuration

Details

I am a bot created to help the crowdsecurity developers manage community feedback and contributions. You can check out my manifest file to understand my behavior and what I can do. If you want to use this for your project, you can check out the BirthdayResearch/oss-governance-bot repository.

[LaurenceJJones]

/kind fix
/area agent

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 58.52%. Comparing base (fd314a3) to head (28db47d).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/parser/unix_parser.go	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #3326       +/-   ##
===========================================
+ Coverage   34.71%   58.52%   +23.81%     
===========================================
  Files         349      351        +2     
  Lines       37672    37676        +4     
===========================================
+ Hits        13076    22051     +8975     
+ Misses      23235    13730     -9505     
- Partials     1361     1895      +534     

Flag	Coverage Δ
bats	41.30% <0.00%> (?)
unit-linux	34.45% <0.00%> (-0.01%)	⬇️
unit-windows	29.69% <0.00%> (ø)

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