[exporter/prometheusremotewrite] fix snappy double alloc#34274

dmitryax merged 11 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-collector-contrib:mainfrom

ben-childs-docusign:bc--optimizesnappybufferallocationben-childs-docusign/opentelemetry-collector-contrib:bc--optimizesnappybufferallocationCopy head branch name to clipboard