[services] Clean up run_all_services.sh

Summary: Relevant Linear issue here. Added double quotes to prevent word-splitting or globbing in run_all_services.sh.

Test Plan: ShellCheck, close reading.

Reviewers: ashoat, atul, palys-swm

Reviewed By: ashoat

Subscribers: Adrian, karol-bisztyga

Differential Revision: https://phab.comm.dev/D4449