Add go1.21.1, go1.20.8

[joshwlewis]

This updates the go inventory with the following changes:

• Add go1.22.1
• Add go1.21.8
• go1.22 defaults to go1.22.1
• go1.21 defaults to go1.21.8

[joshwlewis]

Getting bucket credentials
Syncing contents of s3://heroku-golang-prod/ to /Users/josh.lewis/code/heroku-buildpack-go/file-cache.
Ensuring the correct versions of all files specified in files.json
All files verified, syncing to s3

upload: ./go1.22.1.linux-amd64.tar.gz to s3://heroku-golang-prod/go1.22.1.linux-amd64.tar.gz
upload: ./go1.21.8.linux-amd64.tar.gz to s3://heroku-golang-prod/go1.21.8.linux-amd64.tar.gz