Adding Microsoft SECURITY.MD

[microsoft-github-policy-service]

Please accept this contribution adding the standard Microsoft SECURITY.MD 🔒 file to help the community understand the security policy and how to safely report security issues. GitHub uses the presence of this file to light-up security reminders and a link to the file. This pull request commits the latest official SECURITY.MD file from https://github.com/microsoft/repo-templates/blob/main/shared/SECURITY.md.

Microsoft teams can learn more about this effort and share feedback within the open source guidance available internally.

[codecov]

Codecov Report

Merging #1053 (0f465d3) into dev (c70c381) will decrease coverage by 0.15%.
The diff coverage is n/a.

❗ Current head 0f465d3 differs from pull request most recent head 0a5e75c. Consider uploading reports for the commit 0a5e75c to get more accurate results

@@            Coverage Diff             @@
##              dev    #1053      +/-   ##
==========================================
- Coverage   83.04%   82.88%   -0.16%     
==========================================
  Files          33       33              
  Lines        1775     1776       +1     
  Branches      282      282              
==========================================
- Hits         1474     1472       -2     
- Misses        233      234       +1     
- Partials       68       70       +2     

Flag	Coverage Δ
unittests	82.88% <ø> (-0.16%)	⬇️

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

Impacted Files	Coverage Δ
azure_functions_worker/bindings/meta.py	80.72% <0.00%> (-2.41%)	⬇️
azure_functions_worker/functions.py	94.94% <0.00%> (-1.11%)	⬇️
azure_functions_worker/loader.py	84.52% <0.00%> (ø)
azure_functions_worker/dispatcher.py	89.12% <0.00%> (+0.26%)	⬆️

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