v2.3.1

Changes:

• 👷 Pass latest location header to the final response headers, when {followRedirect: true}
• 👨‍💻 Return correct headers after redirect chain, when {followRedirect: true}
• 👷 Do not continue if CURL OPTION is failed to set;
• 📋 Documentation minor update (mostly links fixes);
• 👨‍🔬 Test-suite update;

Dependencies:

• 📦 node-libcurl@2.3.1, was v2.3.0 (fix missing zstd dependency);
• 📦 [dev] chai@4.3.4;
• 📦 [dev] mocha@8.3.2.