Package template node engine version

[jonchurch]

Currently in the package template package.json the engines field is set to >=8.0.0. Should this be >=8.5.0, to be in line with the current Node support range for OTLP?

I'm submitting a PR to address this, because I figure the answer is yes.

Edit: Okay, so most (all?) of the packages list >=8.0.0 in the engines field in their package.json. (opentelemetry-instrumentation-http, for example)

Curious if I'm missing context here. For clarity, the engines field doesn't prevent anyone from running them at whatever version they please, it just generates a warning. Having those fields accurate though is useful for machines and statistics pulled from the NPM registry.