update build and fix

What's Changed

• Bump cloud.google.com/go/pubsub from 1.30.1 to 1.31.0 by @dependabot in #2

Full Changelog: v2.5...v2.6

update docker build

Full Changelog: v2.4...v2.5

sdk update and modify

v2.4

update and cleanup

update dep and sdk

v2.3

update

update gcloud sdk

Full Changelog: v2.1...v2.2

cleanup and tidy dockerfile

Full Changelog: v2.0...v2.1

Migrate to debian image

• Migrate to debian image
• Update dependencies
• Update gcloud sdk to latest

Inital release

Full Changelog: https://github.com/dipjyotimetia/pubsub-emulator/commits/v1.0