Update to Node.js 12.10.0

https://nodejs.org/en/blog/release/v12.10.0/ https://nodejs.org/en/blog/release/v12.9.1/

deps:

• Update npm to 6.10.3 (isaacs) #29023

fs:

• Add recursive option to rmdir() (cjihrig) #29168
• Allow passing true to emitClose option (Giorgos Ntemiris) #29212
• Add *timeNs properties to BigInt Stats objects (Joyee Cheung) #21387

net:

• Allow reading data into a static buffer (Brian White) #25436

regression fixes:

• Fixes an event listener leak in the HTTP client. This resulted in lots of warnings during npm/yarn installs (Robert Nagy) #29245.
• Fixes a regression preventing the 'end' event from being emitted for keepalive requests in case the full body was not parsed (Matteo Collina) #29263.