Add new scheduled gosec job

[paologalligit]

Description

This PR changes the gosec job to run every day of the week on 8 a.m.: if any issue is found, then a slack message is sent to notify it.

GH Issue

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• New and existing E2E tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have not added any vulnerable dependencies to my code

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.65%. Comparing base (e8d420d) to head (1897fce).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #856      +/-   ##
==========================================
- Coverage   62.66%   62.65%   -0.02%     
==========================================
  Files         208      208              
  Lines       18926    18926              
==========================================
- Hits        11860    11858       -2     
- Misses       5968     5970       +2     
  Partials     1098     1098              

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