chore: remove support for node 8-12, add 18 (open-telemetry#1065)

* chore: remove node 8 and 10 from CI

* chore: update engines

* chore: add node 18 to CI

* fix(resource-detector-alibaba-cloud): call .destroy() directly on the socket

* test: reference the actual error message

* test(instrumentation-fastify): check for similarity with ROOT_CONTEXT, not reference equality

In the CI there will be 3 instances of the API installed(relative to the repo root):

- `./plugins/node/opentelemetry-instrumentation-fastify/node_modules/@opentelemetry/api`,
- `./node_modules/@opentelemetry/api`,
- `./plugins/node/opentelemetry-instrumentation-fastify/node_modules/@opentelemetry/instrumentation-http/node_modules/@opentelemetry/api`.

* chore: remove support for node@12 updating the engines

* chore: remove test runs on node@12

* test(resource-detector-alibaba-cloud): revert change, disable tests for node@18

* fix: turn fastify tests off for node@18

package.json

@@ -28,7 +28,7 @@
   "author": "OpenTelemetry Authors",
   "license": "Apache-2.0",
   "engines": {
-    "node": ">=8.12.0"
+    "node": ">=14"
   },
   "files": [
     "build/esm/**/*.js",