Add note on security advisory for ecrecover in docs

[pcaversaccio]

What I did

I added a note on the recent security advisory for ecrecover in the docs. I also replaced 0 with empty(address) in case of error.

How I did it

Added a note section in the ecrecover docs.

How to verify it

Reference: GHSA-f5x6-7qgp-jhf3

Commit message

Add note on security advisory for `ecrecover` in docs

Description for the changelog

Add note on security advisory for ecrecover in docs.

Cute Animal Picture

[pcaversaccio]

LGTM

[codecov-commenter]

Codecov Report

Merging #3539 (336168c) into master (3c3285c) will decrease coverage by 0.04%.
The diff coverage is n/a.

❗ Your organization is not using the GitHub App Integration. As a result you may experience degraded service beginning May 15th. Please install the Github App Integration for your organization. Read more.

@@            Coverage Diff             @@
##           master    #3539      +/-   ##
==========================================
- Coverage   89.14%   89.11%   -0.04%     
==========================================
  Files          85       85              
  Lines       11362    11362              
  Branches     2584     2584              
==========================================
- Hits        10129    10125       -4     
- Misses        812      816       +4     
  Partials      421      421              

see 1 file with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[fubuloubu]

wish there was a way to update older documentation