Post release 0.8.0: Update version to 0.8.0.dev0#3

harrryr wants to merge 6 commits intoadd-checksumharrryr/aws-otel-python-instrumentation:add-checksumfrom

prepare-main-for-next-dev-cycle-0.8.0harrryr/aws-otel-python-instrumentation:prepare-main-for-next-dev-cycle-0.8.0Copy head branch name to clipboard