Fix bittensor related workflows (e2e testing)

[basfroman]

• Fixed a bug where bittensor tests were run on an already created docker image, but not based on the current code in the PR branch.
• Bumping versions of Actions related to docker's workflow.
• 2 workflows are combined into one (jobs still runs in parallel).
• Docker Image created once then used for all sdk and cli tests in parallel.
• Workflow uses/checks one run-bittensor-e2e-tests label instead of two.
• The build check of the Docker image subtensor-localnet based on the PR branch happens in the same as e2e tests workflow.