Bump go.opentelemetry.io/build-tools/multimod from 0.0.0-20210920164323-2ceabab23375 to 0.10.0 in /internal/tools

Bump go.opentelemetry.io/build-tools/multimod from 0.0.0-20210920164323-2ceabab23375 to 0.10.0 in /internal/tools #244