[chore] Delete old nightly tags and images#1406

mowies wants to merge 4 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-collector-releases:mainfrom

dynatrace-oss-contrib:delete-nightly-tagsdynatrace-oss-contrib/opentelemetry-collector-releases:delete-nightly-tagsCopy head branch name to clipboard