PubSub on PyPI is out of sync with this repo #403

Describe the bug

If one is to download testcontainers-gcp from PyPI, you are getting an outdated version, one that doesn't match with current main.

>>> pip download testcontainers-gcp
...
>>> ls
google_cloud_pubsub-1.7.2-py2.py3-none-any.whl		
testcontainers_gcp-0.0.1rc1-py3-none-any.whl
... (and many more)

However, current setup.py also mentions the same version (0.0.1rc1 that is) here. That updated setup.py sets a requirement on pubsub>=2. As you can see above, it actually downloads pubsub 1.7.2.
I reckon the current PyPI version is based on code before this commit: 934c8d8

To Reproduce

pip download testcontainers-gcp

Runtime environment

Running with
python=3.9.18
pip==23.0.1

To solve (suggestion)
Publish a new version that reflects latest state of main.

p.s. thanks for the maintainers for all the work you've done on this repo <3