fix(otlp-http): reset requests session after fork#4995

dshivashankar1994 wants to merge 12 commits into

open-telemetry:mainopen-telemetry/opentelemetry-python:mainfrom

dshivashankar1994:fix_stale_sessiondshivashankar1994/opentelemetry-python:fix_stale_sessionCopy head branch name to clipboard