Bump electron from 4.2.12 to 9.1.0 in /core/electron-manager#2

dependabot[bot] wants to merge 1 commit intomasternaveedkhan8067/https-github.com-imodeljs-imodeljs:masterfrom

dependabot/npm_and_yarn/core/electron-manager/electron-9.1.0naveedkhan8067/https-github.com-imodeljs-imodeljs:dependabot/npm_and_yarn/core/electron-manager/electron-9.1.0Copy head branch name to clipboard