Bump koa from 2.14.1 to 2.15.4 in /src/unprotected-server#6

dependabot[bot] wants to merge 1 commit intomainapproov/quickstart-nodejs-koa-token-check:mainfrom

dependabot/npm_and_yarn/src/unprotected-server/koa-2.15.4approov/quickstart-nodejs-koa-token-check:dependabot/npm_and_yarn/src/unprotected-server/koa-2.15.4Copy head branch name to clipboard