Bump json5, sass-loader and @vue/cli-service in /wwwsrc#29

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dependabot/npm_and_yarn/wwwsrc/json5-and-sass-loader-and-vue/cli-service-2.2.3BoiseCodeWorks/latespring2020-dotnet-fullstack-gregslist:dependabot/npm_and_yarn/wwwsrc/json5-and-sass-loader-and-vue/cli-service-2.2.3Copy head branch name to clipboard