Bump release-plan from 0.13.1 to 0.15.0#1086

dependabot[bot] wants to merge 1 commit intomainember-cli/ember-try:mainfrom

dependabot/npm_and_yarn/release-plan-0.15.0ember-cli/ember-try:dependabot/npm_and_yarn/release-plan-0.15.0Copy head branch name to clipboard