chore(server): print stack in case of worker error

[etnoy]

Sometimes we get an error in the microservices worker, like the following: porsager/postgres#944

Currently, when this happens the error message is very terse, like

microservices worker error: TypeError: Cannot read properties of undefined (reading 'replace'),

This PR also prints the error stack so we instead get

microservices worker error: TypeError: Cannot read properties of undefined (reading 'replace'), stack: TypeError: Cannot read properties of undefined (reading 'replace')
    at queryError (/usr/src/app/node_modules/postgres/cjs/src/connection.js:389:48)
    at errored (/usr/src/app/node_modules/postgres/cjs/src/connection.js:384:17)
    at connectTimedOut (/usr/src/app/node_modules/postgres/cjs/src/connection.js:257:5)
    at Timeout.done [as _onTimeout] (/usr/src/app/node_modules/postgres/cjs/src/connection.js:1033:8)
    at listOnTimeout (node:internal/timers:596:11)
    at process.processTimers (node:internal/timers:529:7)