Node.js agent v8.8.0

Notes

Updated AWS metadata capture to utilize IMDSv2.
Fixed link to discuss.newrelic.com in README
Updated minimum Node version warning to output current Node version from process.
Bumped @newrelic/native-metrics to ^7.1.1.
Added Nextjs to a framework constant within the webframework-shim.
Updated shim to pass active segment to inContext callback.
Bumped @grpc/grpc-js to ^1.5.5.
Bumped @grpc/proto-loader to ^0.6.9.
Bumped @newrelic/superagent to ^5.1.0.
Bumped @newrelic/koa to ^6.1.0.
Bumped async to ^3.2.3.
Resolved several npm audit warnings for dev deps.
Fixed Post Release workflow by properly configuring git credentials so it can push API docs to branch
Added set -e in publish docs script to exit on possible failures
Removed redundant npm ci in publish API docs script
Added ability to ignore certain PRs in bin/pending-prs.js report to slack
Updated README to include @newrelic/pino-enricher as an external module.
Fixed documentation in a sample of the Datastore Instrumentation for Node.js.
Added a new mongo:5 container to npm run sevices to test mongodb driver >=4.2.0.
Fixed conditions in post release workflow to function when triggered via successful release and manual invoked.
Updated method for retrieving agent version from repository by using cat package.json | jq .version
Fixed minor formatting and spelling issues in create-docs-pr.js.
Fixed an issue with the docs PR script that assumed \n in the NEWS.md file when extract version and release date