chore(deps): bump jsoncons to 1.8.1

[aleksraiden]

Bump jsoncons to 1.8.0 (changelog: https://github.com/danielaparker/jsoncons/releases/tag/v1.8.0)

Key changes

• Bug fix (a lot of bugs are fixed!)
• The types json_pointer_arg_t and json_const_pointer_arg_t have been renamed to json_ptr_arg_t and const_json_ptr_arg_t, and the constants json_pointer_arg and json_const_pointer_arg have been renamed to json_ptr_arg and const_json_ptr_arg.
• Since 1.8.0, the basic_json copy constructor makes a deep copy of any const_json_ref and json_ref pointers it may hold.

[jihuayu]

For non-essential dependency upgrades, could we postpone the upgrade a bit to reduce the risk of supply-chain attacks?
For example, we could freeze them for 14 days.

[aleksraiden]

Updated to bugfix release v1.8.1

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[jihuayu]

I am planning to merge it next week.