Fix release workflow

[rohanshah18]

Problem

When I tried releasing to prod, the workflow failed with the following error:

[Invalid workflow file: .github/workflows/release-prod.yaml#L26](https://github.com/pinecone-io/pinecone-python-client/actions/runs/15689847725/workflow)
The workflow is not valid. .github/workflows/release-prod.yaml (Line: 26, Col: 11): Input python_versions_json is required, but not provided while calling.

Solution

Recently, the unit and integration tests workflows were updated in this pr for creating a new project for each test run. These workflows are used in release-prod.yaml but the corresponding changes were not made. As a part of this PR, I have:

1. added python_versions_json for running unit-tests (required by test-unit.yaml)
2. added encrypted_project_api_key and python_versions_json for running integration tests (required by test-integration.yaml)
3. Added create-project and cleanup-project as extra steps (based on this pr)

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Infrastructure change (CI configs, etc)
• Non-code change (docs, etc)
• None of the above: (explain here)

Test Plan

NA

[austin-denoble]

Workflow run looks good, thanks for fixing! https://github.com/pinecone-io/pinecone-python-client/actions/runs/15691413348