docs(security): change bugbounty provider from h1 to bugcrowd

[DocEmmetBrown]

Our bugbounty program is now with Bugcrowd. The HackerOne program is deprecated.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (2b2ea98) 91.10% compared to head (fb6b6da) 91.16%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #616      +/-   ##
==========================================
+ Coverage   91.10%   91.16%   +0.06%     
==========================================
  Files          32       32              
  Lines        4823     4823              
==========================================
+ Hits         4394     4397       +3     
+ Misses        429      426       -3     

see 3 files with indirect coverage changes