chore: fix path to requirements.txt in release script [autoapprove] (#430)

Source-Link: https://github.com/googleapis/synthtool/commit/fdba3ed145bdb2f4f3eff434d4284b1d03b80d34
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:1f0dbd02745fb7cf255563dab5968345989308544e52b7f460deadd5e78e63b0
3 files changed