fix(ci): Setup Sentry action needs workdir

[rahul-kumar-saini]

• feat(dev): Multi-threaded devservices and move PG health-check out of Docker #29824 introduced a change where a script is executed without defining or going into the workdir it belongs to
• Fixed it and applied formatting to the file

[armenzg]

We both worked on the same fix.
Over here we can see the Snuba runs working against this fix.